Gigantomachia/Relationships

All For One
Gigantomachia is fiercely loyal to All For One. He was his bodyguard when All For One controlled the world from the shadows and said his loyalty has not waned despite All For One's downfall. For his part, All For One considers Gigantomachia an essential piece for Tomura Shigaraki and the resurgence of the League of Villains. Because of this, All for One hid Gigantomachia in the mountains as a means to help preserve his dreams.

However, the same loyalty to All for One that makes Gigantomachia useful also makes him difficult to control for others. He refuses to accept Tomura as successor because he believes that Tomura is not All For One's equal. It is noted that a recording of his master’s voice can quickly soothe him to the point that he will purr.

Daruma Ujiko
Daruma is in charge of controlling and monitoring Gigantomachia after All For One decided to hide him after foreseeing his inevitable downfall. Daruma knows that Gigantomachia is extremely loyal to All For One, and therefor controls him with recordings of his master's voice on the radio that Gigantomachia carries on his neck. Daruma at times refers to Gigantomachia as "Machia". Daruma believes Gigantomachia is useful to Tomura's goals and refuses to lend his full support until Tomura gets Gigantomachia to submit.

Tomura Shigaraki
Due his loyalty to All For One, its difficult for Gigantomachia to believe that Tomura can competently follow their master's legacy, despite knowing that All For One chose Tomura as his successor. When he meets him and the League of Villains for the first time, he challenges them to a fight to see if they are worthy. However, he defeats them easily, being tremendously disappointed to see how weak they are. He bawls that he wants to accept Tomura but cannot get over his lack of power while Tomura proclaims that he doesn't want Gigantomchia.

However, after Tomura's conversation with Daruma, he learns that Gigantomachia is a necessity for his plans and he must get Gigantomachia to submit to him. Upon being warped back, to Gigantomachia's location, Tomura tells him that the “future king” is here. Amused, Gigantomachia replies that a king should inspire dread, be admired and be strong.

They resume fighting for a month and a half. Gigantomachia continues to call Tomura's attacks weak while Tomura becomes more steadfast in getting Gigantomachia to submit.