The Cage

The Cage is a boss that can appear:
 * In the.
 * In the  and the.

Behavior

 * Leaps off-screen and tries to land in Isaac's path; predicting his movement. Leaving a small puddle of damaging Grey Creep and sending out 4-5 lines of rock waves upon landing.
 * Quickly shoots 6 streams of 6 projectiles in a spiral pattern, similar to Mom's Heart/It Lives.
 * Curls up in a ball and rolls towards Isaac, bouncing off walls and obstacles around the room.
 * Spawns a grey-coloured Vis that shoots a brown-coloured laser.
 * The different colours are purely cosmetic, and it behaves exactly like a normal Vis.
 * Any Vis caught in The Cage's rolling attack will be killed.

Champion Versions

 * Green: Periodically leaves puddles of Green Creep and doesn't spawn any Vis.
 * Pink: Two Cages, each with 50% HP (400), replace the normal Cage. Never performs the jump attack

Trivia

 * It has the highest health of any boss fought before Mom's Heart.
 * It is the posthumous version of Mega Fatty.
 * Although the Cage is a dead version of Mega Fatty, it also bears a lot of resemblances to a giant Vis as well, since it is a fat headless body with a giant cut in its belly. Another slight nod to their resemblance is also the Cage's ability to spawn Vis with a Grey color palette and a Brown Brimstone laser.
 * The stitches on the Cage's body resemble Y-shaped incisions commonly made at the start of an autopsy.
 * Despite being a possible encounter before Mom, The Cage has more HP than her.

The Cage