Katana Man is a selfish and cruel-hearted man who only cares about killing Denji, and forcing him to apologize for killing his grandfather. He will sacrifice innocent people and even his own comrades to do so, being willing to cut through them just to get to Denji. He has shown a complete disbelief in Denji's excuse that he killed his grandfather because he was a zombie, and accused Denji of being a liar. He loves his grandfather despite knowing he was a Yakuza boss .