Gazamir

Gazamir (ガザミール) is a hidden sub-boss from Phoenix Magnion's stage, Power Room. It's a big Mechaniloid based on the gazami crab (ガザミ). The player can find two Gazamirs, each in a hidden room with a long ladder above molten metal. Zero has to fight both mini-bosses while hanging on the ladder. It attacks by shooting bubbles from its mouth and grabbing the ladder with its claws. It can only be attacked by long-range weapons, otherwise only if it's close enough for Zero to hit with the Z-Saber. After defeating it, it falls into the molten metal below the ladder.

Here is a sprite of disabled Gazamir: