Thread:184.148.14.236/@comment-1038387-20130101104041

Just, *facepalm*. So, fyi:

Wendy Harris and Marvin White were two characters created by E. Nelson Bridwell for the Super Friends anthology in the seventies. Like so many things from Super Friends (the Hall of Justice, the Hall of Doom, the Legion of Doom) new versions of them were partially or completely added to the DC Universe after Infinite Crisis (2006). Amond them were Wendy and Marvin.

So, "our" Wendy and Marvin were not based on the ones from Teen Titans. Three seconds of googling could have taught you that. 