What If Saitama and Ryoumen Sukuna and Son Goku .. ?

Saitama

So, this is the 'ultimate boss' everyone's been talking about? Looks pretty average to me.

Son Goku

Don't underestimate him, Saitama! I can sense his incredible power. This might be the toughest fight we've ever had!

Ryoumen Sukuna

You fools have no idea what you're up against. This 'ultimate boss' might just be the challenge you've been waiting for, Caped Baldy.

Saitama

Maybe this time, I'll finally need two punches...