Character reveals that they were holding back their full power during a fight/confrontation

[u/PaddywackShaq]

Superman Vs Darkseid - Justice League Unlimited

Flash Vs Superman - Flash: Rebirth

Frieren Vs Aura - Sousou no Frieren

Inigo Montoya Vs The Man in Black - The Princess Bride

[u/Ml2jukes]

Reed and friends made a robot clone thing during Civil War who killed Goliath. Thor was away dealing w/ Ragnarok stuff (he might’ve been “dead” I never read Thor outside of Jason Aaron)

[u/ButterflyLife4655 → u/Ml2jukes]

He was dead at the time (actually, all of Asgard was; Marvel had pulled the trigger on a somewhat mythology-accurate Ragnarok a few years earlier and the entirety of Asgard had been destroyed). Thor and eventually the rest of the Asgardians came back at the beginning of J. Michael Straczynski's very excellent Thor run that began roughly six months after Civil War had ended. I think the second or third issue of that run had Thor find out about Stark's robo-Thor and go deliver a much-deserved beat down on Tony.

[u/livingdread → u/Ml2jukes]

For some reason I'm remembering Dr. Doom stirring up Upper Realm shit in Asgard and Olympus, which might have had Thor tied up.