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. Contents • 1 Behavior • 2 Champion Versions • 3 Gallery • 4 Arena • 5 Notes • 6 Trivia

• 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.

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.

• 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.

• 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. Bosses Chapter 1 Monstro
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