Toguro Ototo

The brothers first show up with Gonzou Tarukane, they are known for leading a gang of demons who trade in monsters. They are experts in handling monsters. Toguro Ototo used to work with Genkai about seventy years ago. They both fought against demons. At one point though, Ototo is unable to save his friends and becomes bitter and self deprecating. When he and Genkai participate and win the Ankoku Bujutsukai, he makes a wish to become stronger, deciding that in order to do this he must become a demon, he wishes for a demonic body that will never grow old and remain in peak condition at all times.

• He can increase his strength up to 100%. More accurately he can hold it back and only use small amounts of energy to obliterate his enemies. It's really rather disgusting to see someone put on that much muscle. Ick.
• He does not age, being a demon.