A boss in the Necropolis, super-evolved version of Gluttony.Looks like Super Gluttony, but
red-tinted and has 4 bloody sacks on all sides.(Similar to Double Vis)It has 3 forms:
-Stands in a center of the room
-Shoots blood beams in + formation and then in X formation.
-Shoots blood beams in * formation
-Charges and shoots a large Monstro-burst of green bombs(6-12 bombs in a burst)
When the first form is defeated, the sack that is on the back of the boss explodes in a burst of big bullets and 2 side sacks are moved slightly to the front.
Behaves like super gluttony, but the blood beam shot is 3-spread both from the front and the back and the ring shot is replaced with a huge green cluster bomb shot.Sometimes spawns Chubbers.
When form 3 is defeated, the front sack explodes in the burst of large bullets.Then Fatboy teleports to the center of the room and blood sacks start slowly orbiting around him.
Sacks fire a constant blood beam that rotates along with them.Fatboy itself will constantly fire green bombs and sometimes spawns double spiders(aka Big Spiders), spider hoppers(aka Trite) and Vis.
When defeated, will drop either a Big Heart(75% chance, +2 container hearts + full health) or a Blood Sack(25% chance, familiar, fires a monstro-shot)