Being a show about the music business, there's bound to be some other bands around. We get to see some of them in music competitions, some playing in clubs, and some even doing collaborations with Jem and the Holograms.

The Leatherettes One of the five bands that take part of the first Battle of the Bands that Eric arranges in the park. Apparently they consist of four females, and their niche is leather. They appear a bit aggressive when the audience is cheering as much for the Space Cadets as they did for them. Whether they are signed to Starlight Music after this remains unknown. Originally there were only thee bands, including the Misfits and Jem and the Holograms, but this is one of the two bands added in the retakes to expand the episodes. Episodes: The Beginning Kimber's Rebellion	The Space Cadets Another one of the five bands that take part of the first Battle of the Bands that Eric arranges in the park. They consist of four females, and their niche is, as you guessed, space. Whether they are signed to Starlight Music after this is unknown. Originally there were only thee bands, including the Misfits and Jem and the Holograms, but this is one of the two bands added in the retakes to expand the episodes. Episodes: The Beginning Kimber's Rebellion
The Limp Lizards Four members, apparently all girls (although their singing voices sound a bit dark), with a blonde on guitar, brunette on guitar, black haired on guitar and redhead on drums. They all wear snake or lizard-skin outfits. Their bass drum says "Limp Lizards" and has an image of a lizard on it. They take part of the first Battle of the Bands that Eric arranges in the park, where Eric has made sure they sound so lousy that the Misfits would sound terrific in comparison. We only ever get to hear one of their songs, and only parts of it, "Broken Glass" which is heard in the episodes "The Beginning", and although Christy invented them only for the story of this episode, other writers included them as background acts in their episodes, and we even hear them again in the much later episode "The Bands Break Up" where we hear even more of the same song. They're actually the backup band that plays for the Kimber and Stormer duet "I'm Okay". Before the retakes, they were the only other band that took part of the first Battle of the Bands that Eric arranged in the park, other than the Misfits and Jem and the Holograms. According to the toy company Integrity Toys, which released the new Jem dolls in 2012-2013, The Limp Lizards have a song called "Cold Slither", which can be read on the miniature showbill included with the W Club member's exclusive doll Broadway Magic Jem. In books: Hardcover book "Battle of the Bands": Where The Limp Lizards are actually dressed out as lizards. Episodes: The Beginning In Stitches The Bands Break Up A Change Of Heart Riot's Hope	Giri This Japanese rock group with their geisha look, was one of the bands that competed in the promoter Tony Cassini's rock fashion competition in Venice, Italy, where all the competitors were especially invited, and the top winners got to take part in Cassini's ambitious rock 'n' roll video. Apparently there's two guitarists, a drummer (sitting in the picture) and a singer. [Thanks to NIGHTWALKER193 for the groupname] Episodes: In Stitches
Maybe A Norwegian rock group which was one of the bands that competed in the successful promoter Tony Cassini's rock fashion competition in Venice, Italy, where all the competitors were especially invited, and the top winners got to take part in Cassini's ambitious rock 'n' roll video. Apparently there's two guitarists, a drummer and a singer. Episodes: In Stitches	This Australian group, which consists of tw oguitarists and a drummer, was one of the bands that competed in the successful promoter Tony Cassini's rock fashion competition in Venice, Italy, where the competitors take part by invitation only, and the top winners got to take part in Cassini's ambitious rock 'n' roll video. Episodes: In Stitches
A Jamaican group was one of the bands that competed in the successful promoter Tony Cassini's rock fashion competition in Venice, Italy, where all the competitors were especially invited, and the top winners got to take part in Cassini's ambitious rock 'n' roll video. Episodes: In Stitches	This Brazilian group was one of the bands that competed in the successful promoter Tony Cassini's rock fashion competition in Venice, Italy, where all the competitors were especially invited, and the top winners got to take part in Cassini's ambitious rock 'n' roll video. Episodes: In Stitches
Fifth Ave. Boys An all male band signed to Starlight Music, that consists of Joe on guitar, Jay on mini-keyboard and Tom on handheld drum. According to their looks, they could be brothers or even triplets, even if that's never mentioned. Anthony Julian directed one of their music videos. They were one of the possible alternatives for competing against the Misfits in the Diskovery Records annual Glitter-Gold contest, and they also took part in the first ever annual Lin-Z TV celebrity beach bash on the southern California beach. They only appeared in episodes written by Christy Marx. These characters were an injoke by Christy on executive producer Joe Bacal, creative director Jay Bacal and executive producer Tom Griffin, and because Sunbow Productions was located on fifth Avenue in New York. Episodes: Glitter And Gold A Change Of Heart	The Skulls A band of three thugs with two skulls and crossbones each tattooed on their shaved heads (if you can tattoo white color), one in the back and one on top. The guy to the left I have no idea what he plays, the one in black in the background plays guitar, and the one to the right plays synthesizer. They even have a special car for their band with a picture of a skull on the sides. They have played at a crummy backstreet club called Flipside. I could have placed this band on the page about Eric's thugs, because other than being a band, they are really violent and did some dirty work for Eric in order to get a recording contract with Misfits Music. Episodes: Glitter And Gold
Band of three, a male leadsinger who also plays guitar, another male who plays guitar, and a female who plays keyboard. This is the first of the bands that Eric and the Misfits see when they're looking for the new member, before Jetta's band shows up. Episodes: The Talent Search Part 1	Band of four, a male leadsinger, another male who plays guitar, a female who plays guitar, and a male who plays drums. This is the second of the bands that Eric and the Misfits see when they're looking for the new member, before Jetta's band shows up. Episodes: The Talent Search Part 1
Tinkerbillies A London-based band that Jetta played in before she joined the Misfits. Other than Jetta, it consisted of three men, a blackhaired on guitar, brunette on guitar, and a blonde on drums. They weren't doing well at all according to the reactions of the audience. But as Pizzazz says, anyone who gets that much of a reaction can't be all bad. "Tinkerbilly" is derogatory slang for a pseudo-rock'n'roller someone pretending to be something he's not. Episodes: The Talent Search Part 1	Sean Harrison's band Sean Harrison's band, which he just calls "the boys". Except for Sean, there's redhead and a brunette guitar player, and a redhead on drums. This seems to be a band Sean plays with regularly since they knew about his relation to Kimber. We hear them play a bit of what Raya refers to as one of their originals. Raya thinks they're great. Episodes: Scandal
Bobby Bailey and the Tornadoes The leadsinger of an old band who claims they helped invent Rock 'n' Roll in the early 1950's. One of their songs was called "Rock and Roll Is Forever", which Jem and the Holograms did a cover on, which he didn't like the sound of. He tells them how the song is meant to be played, and shows them the Tornadoes' old recording studio, where we can see that the Tornadoes recorded atleast five gold records. He becomes a friend of Jem and the Holograms, and they even record a duet "Let's Not Forget The Past". Togheter they try to save his old studio, which is located in a building that Eric Raymond wants to tear down to build the biggest record factory on the east coast. Based on the real life rock and roll band Bill Haley & His Comets [Trivia by NIGHTWALKER193] Episodes: Old Meets New	According to the character Switch, this a good local band, which consists of five men. If you can't tell what those interesting instruments they are holding are, it's probably because they are unique improvised instruments. They aren't big enough to be heard on the radio channel KBST, but played for the live opening broadcast of KJEM with Jem and the Holograms. Episodes: KJEM
The Bluebloods This four part London based band consists of James on bass guitar, Alan on keyboard, the leader Mason Hawthorne on guitar, and Craig Phillips on drums. Aja hadn't heard from Craig for some time when they met at the Unicorn club in London where both bands were playing. Mason lives in Wissex and has just turned 21 years old. Episodes: Britrock	The Ben Tiller Band Ben Tiller is the man in the middle with the trombone. Two of the others are called Larry and Ray. The instruments seen are piano, drums, clarinets, trumpets, saxophone, and trombone. Jem thinks they were the greatest band of the swing era, which took place in the 1930's until the early 1940's in the US. The song "We're Making It Happen" is a collaboration by The Ben Tiller Band and Jem and the Holograms. This band is based on the Glenn Miller Orchestra. Larry and Ray, might also be meant to resemble some of the members of the Glenn Miller Orchestra, there were atleast two "Ray" there. The poster that advertises the bands' performance in London, says "1944", which is the same year that Glenn Miller disappeared. Episodes: Journey Through Time

A legendary Jazz quartet according to Lindsey Pierce, who first heard the band on a record, called Night Train, of her grandfather's when she was only 5 years old. Jem and the Holograms loves their music and owns one of their old albums, but the Misfits consider them boring old men.

Taps Tucker The lead musician of the band, plays trumpet, the same trumpet he has always played, and which he claims gave their band that special sound. Today he isn't doing so well moneywise, and lives in a run down apartment. He loves Jem and the Holograms' music. Was on the Lin-Z show once. Hadn't heard from the rest of the band in years. Episodes: The Jazz Player	Dave Wilson The bass- and pianoplayer who lives in Houston where he works as a janitor at a big arena. He thought it was a dream come true to come to LA and re-unite their old band. Episodes: The Jazz Player
Ace O'Toole The saxophone player who lives a perfectly happy life in Duke's Landing where he makes a good living running some kind of fish restaurant. He still plays music with some friends on saturday nights. Episodes: The Jazz Player	Joey London The drummer, who nowdays lives in Seattle, had lots of debts to some shady people, and was happy to come along for a reunion to hopefully get another chance. Episodes: The Jazz Player

A rockband, first consisting of four members, that played in Germany while Rory was stationed there with the army. He thought their music was fantastic, and went to see them whenever he had a pass. This is where Rory first met Minx (while in the episode "The Stingers hit Town Part One" Riot tells Jem he went to high school with minx in West Germany) who was the only German member of the band, where she played the synthesizer. Riot was inspired by Nirvana and one day when the backup-guitarist quit, Rory took the chance to play with them. Rory was offered to join the band permanently and to come with them on their tour of Europe. Although he hesitated because he was in the service, Rory accepted the offer right then and there, and introduced himself to the audience as "Riot". Rory had a great time in the band, and they had lots of followers. After their tour, back in Germany, Riot was grabbed by the MP's since he was awol, because he had left the army without permission, and was given a dishonorable discharge. Rory wasn't welcome home by his father, so he worked his way back to Europe and re-joined Nirvana. After a fight with the leadguitarist, he quit and Minx came with him.

As for the real life band with the same name, they released their first single in November 1988, while the Jem episode featuring the cartoon band aired already in February the same year.

Jerry The lead guitarist of the band, whose accent reveals he's Australian. He has quite the temper, and three members quit more or less because of him. Episodes: Riot's Hope	He was the back-up guitarist who was always late to the performances, and one day when he was a half hour late he got into a fight with the lead guitarist and quit. According to him, the band was going nowhere anyway. But that was before Rory joined, and took his place. Episodes: Riot's Hope
The drummer, who was the only member who stayed with leader of the band from the beginning until... who knows what happened with the band. Episodes: Riot's Hope

Some cartoon versions of real life musicians, some based on real life musicians, some even re-appeared in later episodes.

Assumingly a singer, since she introduces a music award. She's the one who announces the winner of the best new rock group award. Episodes: The Music Awards Part 2	Roland Owens A singer and pianist who takes part of the "Jem Jam". Stayed at the Starlight Mansion until the Jem Jam. The grandmaster of Rhythm & Blues. He appears to be blind, but that doesn't stop him from being a great singer and pianist. Based on the great musician Stevie Wonder. Episodes: The Jem Jam Part 1 The Jem Jam Part 2
Ron Cox A singer that takes part of the "Jem Jam". Jem calls him "Mr. Lips & Hips". Based on the lead singer Mick Jagger, of the English rock band the Rolling Stones. Episodes: The Jem Jam Part 1 The Jem Jam Part 2 Riot's Hope	Luna Dark A singer that takes part of the "Jem Jam". She doesn't seem to know who the Misfits are. She first had the name "Cherry Bomb". Based on Madonna. Episodes: The Jem Jam Part 1 The Jem Jam Part 2 The Bands Break Up
Johnny Deacon A singer and guitarist that takes part of the "Jem Jam", and stayed at the Starlight Mansion until the Jem Jam. The King of Rock'n'Roll, seems to be a really sweet and polite guy, but tough enough to help Jem and the Holograms get rid of the troublemakers that crashed their Jem Jam announcement, and brave enough to help save Ba Nee's life. He knows how to fly a helicopter, and also knows a bit about sound systems. Appears to be based on Bruce Springsteen, but is perhaps also based on the bass guitarist from Queen called John Deacon. Episodes: The Jem Jam Part 1 The Jem Jam Part 2 The Bands Break Up Riot's Hope	Lena Lerner "The first lady of soul" according to Jem, who takes part of the "Jem Jam", and stayed at the Starlight Mansion some days until the Jem Jam along with her son Dominic. She's a tough girl, who does her best to raise her son. She and her son have also presented an award at the 60th annual Academy Awards, for best makeup. Based on the singer Tina Turner. Episodes: The Jem Jam Part 1 The Jem Jam Part 2 Hollywood Jem Part Two: And The Winner Is... A Change Of Heart Riot's Hope
Dominic Lerner At first he's a very arrogant, and brutally honest boy who gets on the nerves of the Starlight girl Krissie. When he stayed at the Starlight Mansion along with his mother Lena Lerner until the Jem Jam, he demanded to have Krissie's room. Then he treated her like a servant, and shared his opinion on the Starlight Girls' own band. But one thing this cocky boy can't do is swim. He does have a change of heart though, and finds friendship in Krissie, and they agree she will teach him how to swim. The song "You May Be A Star" by Krissie, is mainly about him. Based on a young Michael Jackson. Episodes: The Jem Jam Part 1 The Jem Jam Part 2 Hollywood Jem Part Two: And The Winner Is...
Back-up singers When Kimber and Stormer quit their bands and start recording their own album, they search for the best back-up singers they can finds. Atleast the two to the far right, didn't quite cut it. Episodes: The Bands Break Up
Johnny Beldrix This is a legendary rockguitarist and singer-songwriter, whom Jem and the Holograms bump into at the Woodstock festival. His manager dumped Beldrix for the Misfits who were going to take over his performance. But Beldrix gets on stage and plays the national anthem of the United States of America. Obviously supposed to be Jimi Hendrix, an american guitarist and singer-songwriter of the 60's, who is considered to be the best guitarist in history. His manager apparently wasn't based on his real manager. Jimi Hendrix has a song called Purple Haze, which is the name of one of the Glitter 'n Gold Jem doll fashions. Episodes: Journey Through Time	John Lennon An English singer-songwriter and musician and probably the most known member of the Beatles. He appears in the music video of the song "Rockin' Down Through Time" by Jem and the Holograms, who honors some great musicians of the past. He's mentioned in the lyrics with the line "Lennon stood tall ahead of them all". Episodes: Journey Through Time
Elvis Presley One of the most legendary singers of all times, also known as "King of Rock and Roll", was active in the 50's and 60's. He appears in the music video of the song "Rockin' Down Through Time" by Jem and the Holograms, which honors some great musicians of the past. He's mentioned in the lyrics "...Elvis deserves a hand". Episodes: Journey Through Time

Musicians who plays some kind of instrument, like piano or drums. A couple of real life singers here also.

Randy James Johnny Deacon's drummer is a redhead who stayed at the Starlight Mansion until the Jem Jam, which resulted in that Ba Nee was convinced he was her father. Although he did spend some time in Vietnam, that was not the case. He left Vietnamn years before Ba Nee was born, and he was never in An Loc. Still he is very sweet to Ba Nee and even returned especially for her to try to cheer her up at another point when she was longing for her real father. He even helped saving Ba Nee's life once. According to Johnny Deacon, Randy is pretty popular among girls. He has also done work at Misfits Music, with Pizzazz and Riot. The only Jem Jam participant who wasn't based on any real-life artist. Episodes: The Jem Jam Part 1 The Jem Jam Part 2 A Father Should Be...	One of the people who auditioned at the talent search as the Holograms' new drummer. This weird guy has a toy drum which is the only drum he can play, and attempts to play the "William Tell Overture", but is politely escorted out of the room by Jem and Rio. Episodes: The Talent Search Part 1
One of the people who auditioned at the talent search as the Holograms' new drummer. A clumsy and nervous young woman who almost knocks the whole drumset to the ground. But from what we get to hear, she doesn't sound like such a bad drummer. Episodes: The Talent Search Part 1	One of the 8 semi-finalists (four women, four men) who auditioned at the talent search as the Holograms' new drummer. Previously she had played with bands like Static Moss, The Big Apes, and the Nasties. And she looks quite nasty herself with her clothing and makeup. And her attitude turns out to be just as nasty, when she jealously makes fun of Raya's participation in the contest. In return, Kimber and Aja throw her out of the contest. Christy gave special instructions on how to design this characters. Episodes: The Talent Search Part 1
Another one of the 8 semi-finalists (four women, four men) who auditioned at the talent search as the Holograms' new drummer. He criticizes Raya for bringing a pinata to the picnic, but Craig Phillips defends Raya. Episodes: The Talent Search Part 1	Five professional musicians who apparently can play "slow or fast". They worked for Kimber and Stormer during their collaboration when they were recording their album and had troubles making up their minds on what sound they wanted. Episodes: The Bands Break Up
Antonio Salieri (1750-1825) Mozart's jealous rival who tries to take Mozart's place and play for the Emperor Joseph II at the royal concert. This character is based on a real person who in reality was a Venetian classical composer. And also seems to be somewhat based on the play or 1984 movie Amadeus. Mozart and Salieri never had such a rivalry which is portrayed in the play/movie/Jem episode. Episodes: Journey Through Time	Wolfgang Amadeus Mozart (1756-1791) "Wolfy" A composer in Vienna, Austria. One of the greatest composers who ever lived according to Jem. Although Aja thinks Mozart is gorgeous when the Holograms meet him, he has a girlfriend named Constanze Weber. Mozart assumes Jem and the Holograms are friends of Constanze when they show up in her home. This character is based on a real person. This is one of the few times a real name was used for a character in Jem, and was probably because the real person had been dead for so long. In real life, he married his girlfriend Constanze Weber. This character also seems inspired by the play or 1984 movie Amadeus, and would be where the idea of his funny laughter came from. We get to hear Mozart play a tune from real life in the Jem episode, but unfortunately I can't say what it is. Episodes: Journey Through Time