High Evolutionary is a college nerd whose experiments went so wrong that he became High Evolutionary. In college the only thing I did that made me a high evolutionary was smoking too much weed and talking about the Galapagos islands (and you thought you could escape the dumb jokes). So many scientists get turned into things in Marvel/other superhero stories from their wacky experiments. You never hear about that happening in real colleges. That's because they're all underfunded. You think a state school can fund a gamma ray? They can't even afford to pay their teachers.
Once High Evolutionary became his powerful form, he had a ton of plans, including evolving people using a bomb he made. He's that kind of smart. He's making bombs that evolve people. That'll win you first prize at the science fair. That's for sure.