Y

Mimic Type Y is a monster created by Dr. Stoddart for the same project X was created for with X's same powers. However, Y was never released, and remains trapped in a biohazard barrel under the sea. But it doesn't matter if it's under the sea, X will eventually catch up to her.

Abilities
Y has X's same powers, she can take the form of anyone she touches in 20 seconds of red, purple and blue glooshing and shaping. Once X and Y mate, they will become XY, which will become capable of reproducing, and populating the Dragon Realms, and even the UUniverses.