Hei Hou

Hey Ho is a sub-boss of the Mushroom Hill Zone in the game Sonic & Knuckles, as well as its locked-on form, Sonic 3 & Knuckles. It is fought at the end of the first act of that Zone. Hey Ho uses an axe to chop down trees, and sends the chunks of wood flying towards the player. It has a jetpack that allows it to fly. If Knuckles is the one battling him, he will use a slightly different attack pattern where the wood chunks bounce and his head is used as an attack. Hey Ho may return in Sonic Generations for the Nintendo 3DS due to the return of Mushroom Hill Zone.