I intended that for Anime as server operator, not Anime as coder. Sorry about the confusion.
Simplistic class-based AI for aliens (maybe):
All: Auto-chomp when target inside range.
Basilisk: Same as dretch, but circles target when it gets close.
Marauder: Similar to dretch, jumping constantly, alternating left and right.
Dragoon: Straight line, pouncing toward its target, unless it comes close enough to go for the finesse kill.
Tyrant: Similar to dragoon, but replace pounce with trample.
Battle Granger: Jumps up and down like an idiot, spitting at target. :wink:
This all assumes the AI can tell how close it is to its victim. Otherwise, my idea is pretty much useless.