Some of what it contains is: cartoon episode titles, song titles, cartoon characters' names, names of people behind Jem, book and comic titles and writers' names, doll line names, phrases, locations in the cartoon, names of vehicles in the cartoon.

If there are several answers for one entry, they are separated by a period.
Some things are listed twice, like names (by first and last), or when it's also known by another name.
You may have to look up the answer you get here too.

What it doesn't include:
- Regular words like "dolls", "songs", since those words don't need to be explained.
- Nothing is listed starting with "the", so look in the "H" section for "The Holograms".
- It doesn't say "Jem" next to everything. When mentioning things like episodes or books, it naturally refers to Jem, unless otherwise noted.
- It usually doesn't say what year, or by who/what company something was made. Because that is the kind of info you need to follow the links to find out more about.
- It hasn't been updated to include new releases like the new comic, movie and commemorative doll line yet, so there are alot of things to come.