Harbingers (Bosses)

The Harbingers are group of hobby horse riding bosses that are unlocked by defeating Mom for the first time.

The Ultra Harbingers
The Ultra Harbingers are a team of stronger forms of The Harbingers. The team comprises of the main four harbingers without the alternatives of Conquest, or The Headless Horseman. They are fought one at a time prior to fighting The Beast.