Biomnitrix Episode: The Power Source

In a dark room in the year 1991, a green liquid oozes under a door. The goo abruptly begins to form into a vaguely humanoid shape before vanishing in a flash of light, with a teen in sunglasses where it once stood. He walks up to a drawer, digs around for a few moments, and pulls out a rectangular cartridge. "The master copy," he says, as he walks over to the lone system in the room.

He puts the cartridge into the system and suddenly transforms into a black yeti-like creature covered in blue circuit-like patterns. He then touches the system, seemingly merging with it, before sparks appear all across it and the creature vanishes in a flash of light.

The young man finds himself in a strange, constantly rotating world. Both the ground and sky display the image of birds and clouds, occasionally changing to fish and bubbles. He notices that he is confined by blue blocks and transforms into what appears to be a grey sphere covered in spikes. He rolls his way around the level until eventually finding what he came for, a box of cubes with a turquoise jewel in the center. Upon arriving, he launches his spikes into the cubes allowing access to the jewel. The sphere returns to its human appearance, grabs the jewel, and disapears once again.

Trex Got A Chaos Emerald.