This set was called Heroes vs. Hollywood because why not? It included this Aquaman parody guy (sorry, I threw away the character sheet so I don't know any official names anymore!)
It also came with a dull blonde pop star type, but if you slap his head on the Notquaman body:
You get a guy who looks a little more like Aquaman. With that costume coloration, he could be a Bizarro Aquaman, I suppose.
Jack Wisecracker (I only remember his name because I wrote it down.) Jack looks like the Joker had a baby with Harley Quinn by way of Aku.
I dug around the internet a little and discovered there was a Batman parody figure called Knight Rat. Sigh, now I need to track that guy down!