From the Manufacturer

Benkei 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 popular choices for every team, regardless of clan, since they may be used to supplement a team's weaknesses in battle or further augment their strengths. Benkei is focused on defense, and can be one of the most difficult models in the game to overcome. Players whose teams need a boost in durability, or require a central linchpin to rally around are well served by adding Benkei to their team. For Benkei, devotion to duty is a defining characteristic. While his martial skill serves him well, it is his utter devotion to the Moon Throne that imparts his famous resilience and fearlessness. They say that the gods could not move Benkei when he takes a stand in the Princess's name.