Animation/Sound Question

[DG333]

Hello. I am trying to make single player mods when I play as a Grunt and Elite and I wanted to know if there is anyways to give the animations to the single player just like the AI? (For example: The animation of an Elite sword melee, and the Elite taunting, or a Grunt running away yelling. It's pretty much just like playing exactly as a 1 player Grunt/Elite with the animations/sounds that arn't included in a simple biped swap.
Does anyone know how exactly to do this?