Lastime i tot blast is saitama. When elder centipede attack the city, King calling on him and say he brought blast wif him since he looking for blast. Then elder centipede attack king, saitama suddenly appear in front king n destroyed elder centipede in one punch.

And got mentioned in OPM fandom, 2 yrs ago blast did fought elder centipede and almost kill it, but elder centipede manage to run n hide under ground. But when meet saitama for 1st time, elder centipede no chance at all, immediately destroyed by one punch. Lulz!
Myb saitama stronger than blast.

And yah, king is fake hero, he not a hero n no ability n not even strong. Saitama is the one always appear to safe him, and everyone tot tat king who killed those monster, but actually is saitama.

some said King's true power is he has "aura" that intimidates opponents into hesitation/fear

thats just he extent of his power tho, the rest is as normal as a human