Onibaba is a mercenary ronin for Ninja All-Stars. Ronin bring potent new abilities to a player’s team that are entirely unique to them. As mercenaries, ronin may be used by any player, on any team. This makes ronin invaluable assets for every team, regardless of clan, since they may be used to supplement a team’s weaknesses in battle or further augment their strengths.
As a mortal, Onibaba would lure stragglers from battles into her traps, finish them off, and sell their possessions. One night, however, she pulled a finely crafted mask from a dark and terrible samurai, and slipped it on over her face. In that instant, the dark power from within the mask touched the festering rot in her soul and consumer her. Soon the mortal hag was gone, replaced by an ageless, devouring horror that has stalked Kagejima’s places of slaughter ever since.
1 Onibaba Reference Card