From publisher blurb:
Beware the wrath of nature... Manitou!
A Power Level 12 Renegade, the being known to the public as Manitou is a nearly unstoppable force of destruction. Manitou is an iconic being in the Beacon City universe, but can be dropped into any campaign with very little alteration.
Manitou is designated "Black" for its mysterious origins. All that is known of the rampaging creature is drawn from campfire tales and ghost stories going back for decades. The truth behind it is still a mystery for your heroes to discover. Because of its powerful connection to nature, heroes may encounter the Manitou as a dangerous berserker, or they may find it an erstwhile ally if they are ecological defenders themselves. Either way, your heroes cannot stand idly by while the Manitou walks the Earth!