Wheatley
DON'T PUSH THAT BUTTON!
The DS version was developed by Natsume, not 8ing. 8ing developed the Wii version, which is the far superior version (though it has less kaijins than the DS version). The graphics on the Wii version are subpar, but the gameplay is a lot better.
The Wii version is pretty much the American counterpart of Climax Heroes while the DS version is a completely original game.