For his size, he should be size 5. I put him against 5 levels of terrain and he's in the middle. I also compared his mini with Darkseid, Grundy and Doomsday and they are all taller.
The stats look good, but should he have a move of 6, being a gorilla and all I figured he could be a little quicker, and it would help him climb terrain better like a gorilla could. It would be a subtle way of letting him climb better without a specific climb or leap type power.
As for the powers, I guess without getting overly complicated, they seem to work as he should have a Mind Exchange power and be physically Tough.
The one thing I might suggest for what it's worth, would to maybe allow Tough to work against all attacks. This would set him apart slightly considering they are official powers and it would allow him to be "tougher" vs. Telepath special attacks that he could be and maybe help show his Genius Intellect in maybe anticipating special attacks and reacting accordingly. I don't know, it's all I can come up with at the moment.
