Saitama vs. Super Custom YO649Z Mk. II

'''Saitama vs. Super Custom YO649Z Mk. II''' was the fight between the amateur hero Saitama and the monster Super Custom YO649Z Mk. II.

Prelude
Saitama returns to Z-City after defeating Marugori. As he is walking, he is noticed by Super Custom YO649Z Mk. II.

Battle
While Custom talks about his past, Saitama thinks about his lack of entertainment. Saitama is uninterested until Custom insults his bald head and Saitama kills him in one blow.

Trivia

 * This is the first anime original fight in the series.