>>281429166 (OP)
Both Mirai and Cameron. Cameron made the White Base an offer to escort them out of Side 6 territory, which would prevent the Zeon battleships outside from opening fire on them for a while because Side 6 has a non-agression pact with both the Federation and Zeon. Mirai thought this was Cameron just trying to show off to get her to change her mind, and Cameron got wrapped up in her argument.
Sleggar slapped Mirai and then punched Cameron (after taking his glasses off to be considerate) to snap both to reality: This squabble is petty, we are at war. Cameron's offer is EXTREMELY generous to the White Base to allow for necessary prep time before the fighting begins, Mirai needs to think about the needs of the ship and the crew first, and Cameron needs to stick up for himself instead of constantly denigrating himself out of shame.
Sleggar always put the needs of the many over his own, taking up empty spots when it was necessary, offering advice and counseling to the younger crewmembers, and flying side by Amuro when he needed a wingman. Even his death was a sacrifice to get Amuro inside the Big Zam's i-field so he could destroy it to stop it from ravaging the Federation fleet assaulting Solomon.
Is it any wonder Sleggar is popular? Dude's a gigachad.