Stompy

Stompy is the second boss in Snailiad found in Spiralis Silere. He is a giant pair of feet that try to stomp on you (as his name implies). The arena you fight him in is very large so that the area has enough space to fit him. After he takes enough damage, his eyelids change to a different color, and when he's almost defeated, his eyelids, and his feet change to a dark red, like Shell Breaker.

There are also cannons on the ceiling that shoot at you while you're focusing on Stompy. It's best to just attack Stompy, you might miss shots and they might hit the cannons.

In Boss Rush, his name is Vis Vires and he his color is purple. He is a harder version of Stompy. When he's almost dead, he turns to orange like Stompy does. There are also invincible Floatspikes on the ceiling.