MMOE I guess, most sources have monsters, I think you should learn the newer system. So stay away from creepylava's source because that has the old system and yeah.. Phoenix, MMOE, any you can get your hands on really also the enemy code (Behavior, that is the name that is given to how the enemy acts, when he shoots, what he shoots, does he move etc) That is in wServer => Logic => DB or something, i know it's wServer and logic. ^^ Have fun.