There is already a Marvel superheroes versus Marvel supervillains chess set at Amazon:
http://www.amazon.com/Unknown-Marvel-Heroes-Chess-Set/dp/B00008W72X
However, there is no DC superheroes versus DC supervillains chess set and here is my suggested line up:
Superheroes:
King – Superman
Queen – Wonder Woman
Bishop – Green Lantern
Knight – Batman
Rook – Flash
Pawn – Policeman
Supervillains:
King – Lex Luthor
Queen – Cheetah
Bishop – Sinestro
Knight – Joker
Rook – Captain Cold
Pawn – Thug
WereVerse Universe Baby!
WereVerse Universe at Google Drive Link