Just finished season 1 and i noticed this plot hole, which was probably noticed way before me but i wanted to share it. You know how Art was able to tell that Omni-man stuck first from the blood on his glove? I just rewatched the fight and the first sign of blood was from Red Rush’s punching Omni-man on his chest, then he breaks Red Rush’s face and gets blood on his gloves. Also these two instances happened within seconds so it would be impossible to use the method Art used
Omni man coughed up blood when Red Rush was punching him and got it all over his neck and upper chest.