Monstro

This article is about the boss. For the posthumous version, see Monstro II. For the enemy, see Ministro. For the item, see Lil Monstro.

Monstro is a boss that can appear in the Basement and the Burning Basement.

Behavior[]

He hops towards Isaac.
Coughs up some blood projectiles in Isaac's direction.
Jumps off-screen, aiming to land on top of Isaac. Creates a burst of disorganised projectiles in all directions on landing.

Champion Versions []

Grey: 15% larger and has 25% more HP (312.5). Uses projectile volleys much more often and is unable to jump off-screen.

Red: Two 20% smaller Monstros, each with 55% less HP than the original one (112.5), replace the normal Monstro.

Gallery[]

Monstro ingame.
Grey Champion Monstro.
Red Champion Monstro.
Monstro as one of Delirium's forms.

Arena[]

Note: Layouts 1 and 11 are identical. Layouts 4, 8, and 9 no longer appear, as small boss rooms and boss rooms with two or fewer possible doors have been disabled.

Notes[]

In the boss room, Monstro can be paired with Flies, Attack Flies, Gapers, Hoppers, Frowning Gapers, Mulligans, Cyclopias, or Ministros.
When Monstro jumps off-screen, he is cured of all status effects.
Monstro can't hop over Obstacles.
- If Isaac is somewhere that Monstro cannot reach, Monstro will jump in place.
- If Isaac has flight and is over an obstacle, Monstro will give up and stand in place after attacking a few times until Isaac is no longer above an obstacle.
  - While Monstro can hit Isaac with his tear barrage because of his tear height, he is very unlikely.
Monstro can rarely spawn in a room with two Blood Donation Machines.

Trivia[]

Monstro appeared in the original The Binding of Isaac.
He is the boss version of the Ministros.
Monstro appears to be missing a tooth which appears as the item, Monstro's Tooth.
- Monstro also has a cleft lip.
Monstro is Monster in Portuguese.
- "Monstro" is a somewhat common mispronunciation of the Spanish word monstruo.
- Monstro is also the name of The Terrible Dogfish, a fish with a large mouth and many teeth from the book The Adventures of Pinocchio.