"Hagen died in the "Crisis On Infinite Earths", but his place was soon taken by Clayface 3 - Preston Payne, whose mere touch is so lethal he has to wear a special containment suit at all times. Finally, Sondra Fuller was changed into Clayface 4 - a.k.a. Lady Clay - by the villainous gang-leader Kobra. She acquires the power of anything she changes into.
Basil Karlo mixed blood samples from Clayface 3 and Lady Clay, and injected the resulting serum into his own veins. He turned into a monstrous, shape-changing lunatic who calls himself the Ultimate Clayface. Brought together by Karlo, Preston Payne and Lady Clay tried to give up crime; they fell in love and had a son they christened Cassius. All the Clayfaces are currently incarcerated under high security - but baby Cassius seems to have inherited the powers of both his parents...and may yet turn out to be the most dangerous Clayface of them all."
Personally I think that Beast Boy doesn't stand a chance. He can morph into any type of animal right? So what. What's he gonna do against a walking pile of mud that can turn into steel spikes instantly? Think Venom or Carnage vs. Beast Boy. It's practically the same thing. Clayface could just wrap himself around Beast Boy and suffocate him. And if Beast Boy changes into a blue whale or insect, Clayface would just enter his nostrils before the change and control the mud to drown his lungs.
umm in a comic he so would.
how about I do green 3 and have that as the final.
http://www.killermovies.com/forums/showthread.php?s=&threadid=319033&highlight=piccolo