Number 6/Relationships

Knuckleduster
When he was still an experiment he watched when O'Clock's career fell apart and lost his Quirk.

Number 6 has great respect for him, to the point that he has a huge poster of O'Clock in his apartment. His admiration is such that his characteristic scar on his face is self-inflicted, as a tribute to the one that Knuckleduster has. He is so proud of this scar that he can not bear to have another injury on his face.

Knuckleduster had no relations with him before investigating the Villain Factory. When Tanema tells Knuckleduster that the police have had an encounter with him, he recommends that, if the police come across the villain again, they'll shoot him down immediately.