but can he beat Saitama?

yes

wrong answer

you're the one with the wrong answer here

I doubt you even know who Saitama is

I do
Krupp is stronger

saitama blasted away the entirety of jupiter by sneezing by default he's stronger than all the other guys in here

ok and
Krupp beat Goku without even punching

proof?

Saitama beat someone in zero punches aswell

Why has it taken you this long to realize it's a joke

I don't think you were kidding, I think you ran out of things to say

You think I was serious about the principal from Captain Underpants beating one of the strongest anime characters

Pretty obvious

canon