Toguro Otouto is the younger Toguro brother from Yu Yu Hakusho, known as a powerful antagonist and one of the most memorable fighters in the series. He is a demon-like martial artist who serves as the main opponent during the Dark Tournament arc. Calm, ruthless, and immensely strong, he pushes Yusuke Urameshi and his team to their limits. His character represents obsession with power, the cost of strength, and the tragic bond between brothers.