Metamorphosis

Metamorposis is one of Spiral's moves in X-Men: Children of the Atom as a Hyper X move. It's performed by pressing QCF+PP and then pressing the Punch button to grab the opponent. While performed, Spiral hits the opponent with transforming into all of the X-Men characters. This got taken even further in Marvel vs. Capcom 2, where she transforms into the entire Marvel cast.