User blog comment:Nobody700/What If: Alien Invasion arc part 2/@comment-5038468-20151219213253/@comment-3045030-20151219234848

Well i think he it was technically "Assisting in the fight against human monster Garou", i don't think he knew how powerful he was, and he clearly had no clue Saitama destroyed the Meteor ("so he was there"), clearly he's quick to underestimate his "Opponents", like nearly everyone else in OPM.