C.H.A.D. is a atlernate version of Chub, he is unlocked when you clear The Caves enough times. He is found on The Caves and will drop Little C.H.A.D. 100% of the time (unless you fnd Little C.H.A.D. beforehand, in that case he will drop a common boss drop). Like Chub C.H.A.D.'s main way of attacking is charging at Isaac, but unlike Chub he summons Sucker Flies instead of Chargers. Another differance is after enough damage C.H.A.D. will shrink which will increase his speed greatly. The best way to deal with him is placing bombs down his charging path which will cause him to eat the bomb causing great amount of damage.
