Gremlin Cage

Gremlin Cages are, as the title says, cages that contain trapped Gremlins in Epic Mickey and Epic Mickey 2: The Power of Two.

Appearance
In the beta version of the game, Gremlin Cages had two metal plates as the top and bottom, connected by metal bars similar to those found in jail cells.

In the final game, the Cages still have the metal plates, but instead of jail cell-like bars, thay have metal bars connected by glass plates.

In the graphic novel, the one cage that appears (Gus) is completely metal and not see-through.

Story
After the Thinner Disaster happened, the Gremlins still battled the Blot's forces. Since the Mad Doctor was an ally of the Blot now, he invented cages to imprison the Gremlins. According to Bennet, the reason that the Gremlins can't simply teleport out is that Doc designed the cages specifically to prevent this, although how they prevent it is unknown.

When Mickey arrives in Wasteland, he encounters all of the caged Gremlins. If he chooses, he can break them out of prison. If he frees all 30 of them, near the end of the game ("Inside the Blot") Gus gives Mickey the Special Gremlin Guardian Pin.

If you did not free all of them or even worse none of them, they presumably stay trapped inside after the events of the game.

Caged Gremlins

 * 1) Calvin
 * 2) Trigo
 * 3) Habel
 * 4) Hyperion
 * 5) Pinza
 * 6) Braun
 * 7) Sam
 * 8) Herman
 * 9) Ditto
 * Kip
 * 1) Ronald
 * 2) Starr
 * 3) Wilco
 * 4) Roger
 * 5) Apollo
 * 6) Sparks
 * 7) Nova
 * 8) Epsilon
 * 9) Delta
 * 10) Omega
 * 11) Markus (required; doesn't count for Pin)
 * 12) Marc
 * 13) Buzz
 * 14) Erik
 * 15) Neville
 * 16) Haig
 * 17) Sydney
 * 18) Jumbo
 * 19) Jarvis
 * 20) Ferdinand
 * 21) Stuffus