King/Relationships

Saitama
King is extremely appreciative of Saitama. As the hero that saved King from Octopus Claw Man, King holds Saitama in high esteem and considers him an extremely powerful hero. King is the closest Saitama has to a friend. He offers him advice on Saitama's issue, play and lend video games to him and generally respects him. King has total faith in his abilities to the point of facing down Elder Centipede with Saitama as back up.

Tatsumaki
Tatsumaki believes King to be a respectable fighter and respects him for his strength. King is one of the few figures that Tatsumaki will back down matters down.

Genos
While the exact nature of their relationship is unknown, the two are shown to be friends. Like most characters Genos is unaware about how weak King is.

Superalloy Darkshine
Despite Darkshine's immense physical strength and prowess, he still acknowledges and respects King's title of the "Strongest Man on Earth" (which, ironically, could've possibly been Darkshine's title if not for King's status). Darkshine sees King as stronger than even Tatsumaki when he tried to calm her down after she berated the "Strongest Man on Earth". Darkshine also says that King is one of the three S-Class heroes not to anger, comparing the hero to himself and Tatsumaki.