Ben alien=character and dimension=new name
heatblast=human torch from fantastic four=blaster
wildmutt=wolverine from x-men=wyldcat
diamondhead=sandman from spiderman=sandblaster
xlr8=quicksilver from the x-men=hermes
grey matter=doctor cockroach phd from monsters vs aliens=smartbug
four arms=ruben from lilo and stitch=strong-arm
ripjaws=the lizard from spiderman=leatherback
upgrade=ultron from avengers=techie
ghostfreak=Dan phantom (ultimate enemy future version after all we all know how ghost freak turns out now don't we?)=phantasm
cannonbolt=sonic the hedgehog=roller brawl
wildvine=undergrowth from danny phantom=swampvine
waybig=giant man from avengers=humunguy
ditto=jamie madrox=multiman
Rath=hulk=hulk(after all that is all he can say really)
more will be announced as we go further