Smallville has had a number of DC characters in the form of both heroes and villains, but this may be the most unique yet. Allison Scagliotti (the lovely Claudia on Warehouse 13) and David Gallagher were just cast as a pair of twins, who are indeed going to be the Wonder Twins when the new season of Smallville starts.

"Better known by the names Zan and Jayna, in the comics the Wonder Twins can communicate telepathically and take the form of water in any state, be it solid, liquid or gas (him) or the form of any animal (her). Their signature move is to bump fists while declaring "Wonder Twin powers, activate!"