if and when monkey RB's i think there is any skill he can have. for example his death quest when he gets turned into the alien ape and you have to fight him can perhaps be used in refrence to one of his rb skills.

his transformation would look like that of a rising. where he's arched and curled in a ball. as he enlarges and grows he parts his arms out as he streches, his head tilts back as he gives a earth shaking roar that stun his enemies in fear.

using that opportunity he rushes towards the enemy and does an anslaut of hits and beatings as he punches them numerously. before he becomes weakened and shrinks back to size again.

or perhaps thats to violent so instead does some cartoon dragonball z refrence. he tranforms and does a lazer beam from his mouth. aoe that hits front and back.

melee could be called; rage assult. aoe stun. has chance to stun all enemies on the field (chance to miss some) lasts 2 turns including turn used. while he randomly chooses one enemy to attack. i say randomly cause while in his rage he'll no longer listen. (or you can control him and he attacks the one you choose)

mage attack would be; rage cannon. attacks up to 4 or 6 enemies. or just the 2 in a row. (need somthing to make it match with his melee skill so no one thinks one is more powerful than the other.)

you can have one or both... or when he rb if his int is higher than his str he can get mage skill. if str is higher he gets melee skill.