Mainly, its just that chicken has an insanely good recovery and is annoying (just like blaze). If you actually try to dodge the chicken missle but try to attack, you may kill the chicken as it wont auto reload if it doesnt hit someone. Wolf is really unbalanced since they move super fast and really small. Creeper, you'd just have to double jump as soon as youre sulphur bombed (or a bit before you see it hit you but dont double jump right when theyre about to sulphur bomb). Blaze is also op since youd have to try to see in the fire and not hit the void and the particles are distracting (inferno also recharges too quick). Thats just imo though.