Monstro II

Monstro II is a boss that can appear in the Depths and the Dank Depths.

Behavior

Hops towards Isaac, similar to Monstro.
If Isaac is standing to the left or right side of Monstro II, he will shoot a horizontal Brimstone laser.
Jumps off-screen and lands on Isaac's position two times in a row.
- Shoots 8 projectiles in all directions on his first landing. Each projectile deals a full heart of damage.
- Spawns 4 Suckers on his second landing.
  - Suckers caught in Monstro II's hops, as well as his jump and his Brimstone attack, are killed.

Red: 20% smaller. Moves and attacks much faster, but only spawns 2 Suckers when landing.

Has 10% less HP (569.25).

Monstro II appeared in the original The Binding of Isaac.
He is the posthumous version of Monstro.
Gish is his alternate version.
A spinal cord can be seen attached to Monstro II in his Versus image, implying that Monstro had a lower body at one point. The spine can also be seen when he fires a Brimstone laser.
Monstro II is missing a tooth, most likely a reference to Monstro's Tooth.
In the original The Binding of Isaac, Monstro II was the very first posthumous boss prior to the Wrath of the Lamb DLC.
He is Edmund McMillen's least favorite boss solely due to his name.