|Voice Actor:||Hayami Shō (Japanese)|
Chris Ryan (English)
|Novel Debut:||Menace of Darkninja|
|Manga Debut:||Chapter 2 (mentioned)|
Chapter 1 (Kills)
|Anime Debut:||Episode 2|
Fujio Katakura (フジオ・カタクラ, Fujio Katakura), known as Darkninja (ダークニンジャ, Dākuninja), is a ninja who worked for Laomoto Khan and was part of the Soukai Syndicate. He is responsible for killing Ninja Slayer's family.
Darkninja has white hair and his armor is a dark purple.
Part 1: Neo-Saitama in Flames Edit
Born in Red Black Edit
He killes Fujikido Kenji's wife and son, Fuyuko and Tochinoki, at Marunouchi Sugoi-Takai Building in one of the Soukaiya's battles.
Machine of Vengeance Edit
Laomoto Khan orders him to kill Ninja Slayer.
Rage Against Tofu Edit
He appears and fights Ninja Slayer.
Guided By Masashi Edit
Koros Oblivion Edit
Menace of Darkninja Edit
He fights Ninja Slayer and loses terribly.
Stranger Stranger Than Fiction Edit
Neo-Saitama in Flames Edit
Part 2: Kyoto: Hell on Earth Edit
Power & AbilitiesEdit
Beppin: His sword which contains a ninja soul.