I've been reading Doom Slayer's Lore (Doom Eternal), and apparently he can run almost 100 times the speed of light. He is also possibly stronger than One Punch Man, and the dude's armor cannot be broken.

I have been working on calculating the strength, durability, and speed of Omni-Man. I have all the numbers, I just want to make sure it's formatted properly and be 100% sure everything is done properly. I'm 100% sure of the speed though. (3,726,735.863 miles per hour or 0.0555533333333c).