I'm pretty sure that this happened in the 90's, but I heard/read that Despero joined the League, I think that it was in disguise, or that he was under a different name/identity. Can anyone tell me the storyline/issues that this happened in, as well as the circumstances? This doesn't sound like Despero at all, so I'm guessing that there was some kind of mind control or something going on. Thanks for the help.
It happened because Despero and L-Ron (an android) exchanged minds. L-Ron in Despero's body became part of the Justice League Task Force.