tone down the hyper-aggressive monkey ai

[Frank_Stein]

Replace monkeys with chimps/gorillas, please. Now they should be able to throw you around like a rag doll and rip your limbs off. Pull out all the stops. Make people fear the simian threat.

If a monkey got hulk and turned into a gorilla that would be the best.

To add to Sundance's thing, which is great, I think monkey training could be a neat thing. Use positive and negative reinforcement to bend monkeys to your will. Give them a treat after they do something to increase the likelihood of them doing that, or damage them to decrease the likelihood of that happening.
Train them to have a Pavlovian response to the harmonica/saxophone/farts. Reward them for hitting buttons so they'll hit all the buttons. Monkey operated mechanics constructions.