Ringleader

Ringleader is one of four bosses that can be encountered on the first floor. Often considered the easiest of the four, it uses a relatively tame amount of bullets as well as ghosts and big ghosts to attack the player. Its name refers to its tendency to have ghosts circle around it during various attacks. This particular mode of attack is an evolution of big ghosts, which simply have ghosts surround them when in the same room.

Hard Mode
The hard mode version of Ringleader shoots more bullets with each attack.