H-23 was part of the Advance Team of the 4th corp of Zahard's army sent to the Last Station to carry out one of the Zahard's Orders. When the doors of the Hell Train opened, Dorian Frog was facing a mysterious character that stepped out of the train. Knife and H-23 bravely dashed between them, so that their superior didn't need to bother with the newcomer. Underestimating the new opponent was their demise and they died when the 10thSlayer of FUG used Incinerating Flame of Death.