Martian Series (HGD)/Rocky Road 1/Blue Boss Mask Copter

About
The Blue Boss Mask Copter constantly drops fairly dangerous spikes onto the ground, where they linger for a few seconds before disappearing. This boss hardly stays in a single position above the ground, instead flying erratically and leaving trails of spikes on the ground. Even when attacking a character, the boss will randomly oscillate horizontally around the character, leaving spikes near them.