Mush Maker

Mush Maker is the boss of the Blue Cavern added in the Beta 1.1 update. This boss will attack the player by slamming its hammers into the ground, creating waves that damage the player if they do not jump over them. Another way this boss will attack the player is by shooting Blue Cavern enemies out of its tube, which will attack the player if they get too close to them. To damage the boss normally, the player has to wait for it to open one of its three doors, revealing a red button that must be attacked.

Appearance
This enemy appears to be a large, active machine with moss or mycelium on its body. It has two large hammers that look similar to the Mush Masher, and multiple doors on its body--two on the bottom portion, and one on the top portion. Inside each of its doors is a large red button with a black skull decal on it. It also has a tube, which it uses to shoot out enemies.

Drops
When defeated, the Mush Maker can drop the following with a 100% of dropping something:
 * Wood (1x) 50%
 * Mush Masher (1x) 7%, (2x) 2%
 * Coins (1x) 100%, (2x) 4%
 * Singfruit (1x) 20%
 * Mycelium Suit (1x) 1%
 * Super Magic (1x) 101%, (2x) 2%
 * Fire Spirit (1x) 8%
 * Strange Gizmo (1x) 1%

Trivia

 * The buttons for the Mush Maker are active all the time, meaning that if you can hit the buttons through the doors, it can be damaged even if its doors are closed. However, this glitch only works for the door on the side of it.
 * This boss is very unpopular among fans due to its bland attack patterns.
 * This boss is referred to as Mush Maker in the code, but referred to as Doom Shroom in the OST leading to confusion among players on the boss's canon name.