Who wins?
Zombieman vs Speed-o'-Sound Sonic
Speed-o'-Sound Sonic wins 57% to 43%. 22 more put them in the same row. From One Punch Man Characters Tier List. Pick a side.
TonyWas_Here on Zombieman: his fights in the monster base are way darker than the rest of the show
throwaway1336 on Speed-o'-Sound Sonic: the crotch punch on the first meeting is anime history
One Punch Man Characters Tier List: the full ranking