Tomura Shigaraki/Relationships

All For One
All For One is Tomura's master and the one who saved Tomura in his childhood. He has also groomed Tomura to be his successor. Ever since then, Tomura has looked up to All For One. All For One is very committed to his role as Tomura's master. During the Kamino Incident, All For One tells Tomura that even though he failed, he needs to continue and try again while proclaiming that he is there to help Tomura succeed and that his actions are for Tomura.

All For One is happy to see Tomura think for himself and begin to "carve his own path forward" by having the Vanguard Action Squad capture Katsuki Bakugo. He decides to stop the Pro Heroes and Police Force from apprehending Tomura and his Squad. At the start of his battle with All Might, All For One activates Kurogiri's quirk to give Tomura and his team and his paw, Katsuki, an escape. Tomura stalls and asks about what will his master do. When the fight between All Might and himself intensifies, All For One forces Tomura and his Squad to leave. Tomura, worried about All For One's condition, calls out for him saying he is not ready.

It is unknown if he is aware or even cares that All For One was the one who killed his grandmother, Nana Shimura.

Kurogiri
Kurogiri is loyal to Tomura as his care and development were entrusted to Kurogiri by All For One. Tomura values Kurogiri, considering him to be important during the League of Villains's attack on the USJ. While Kurogiri generally follows Tomura's orders, he will go against Tomura's commands if he believes that Tomura is acting too hotheadedly. As in the case of Tomura's introduction to Dabi and Himiko Toga were an irritated Tomura tries to kill the latter two and Kurogiri stops him and reminds him that "if they are to act upon his desires, expanding the League is a necessity" and advises Tomura to accept Dabi and Himiko. Kurogiri occasionally talks over Tomura for this same reason. Daruma Ujiko believes that Kurogiri babies Tomura.

Tomura becomes slightly annoyed after Kurogiri's capture which consequently delays the locating of Doctor Ujiko. In this time, Himiko Toga notes that Tomura misses Kurogiri.

Although, Tomura values Kurogiri he has called him a few names such as "idiot" which Kurogiri overlooks.

Daruma Ujiko
Tomura Shigaraki has known Daruma since being rescued by All For One, however they have had few interactions due to Daruma's cautious nature. Daruma gave Tomura his collection of hands.

Tomura only receives criticism and reproaches from Daruma after being summoned from battle with Gigantomachia, due to his lack of achievements and progress since the fall of All For One. Daruma questions what it is that Tomura has to offer in exchange for his help. Tomura answers that he wants to destroy everything and that he can show the doctor heaven and hell. Daruma comments that Tomura's dreams are childish but likes his passion. Keeping to All For One's plans, Daruma agrees to help Tomura but stipulates that his full support will come after Tomura defeats Gigantomachia.

Unlike Kurogiri, the doctor does not baby Tomura. He gives him and the League a one-time small allowance after their meeting to live off of.

Gigantomachia
At first, Tomura expresses delight when he meets Gigantomachia for the first time, realizing that he must be the “power” Kurogiri mentioned. However, his opinion changes after Gigantomachia challenges the League to battle. Gigantomachia erupts into an inconsolable rage from witnessing Tomura's weakness and realizing how much he does not equate to All For One even though he wants to accept Tomura as successor. After Daruma is able to soothe Gigantomachia, Tomura says that he doesn't want Gigantomachia.

Tomura returns to fight Gigantomachia after his conversation with Daruma, declaring himself the future king. Gigantomachia is intrigued but after a month and half of fighting he still calls Tomura weak. Tomura on the other hand becomes more invigorated and steadfast in getting Gigantomachia to submit.

Dabi
Upon their first encounter, Dabi expresses disgust at the sight of Tomura. Tomura responds by calling Dabi ill-mannered and requests that Kurogiri warp him and Himiko away. Coupled with Tomura's sullen state from Stain's popularity over the League's, Dabi's refusal to give answers to Tomura's questions and Dabi's admiration of Stain ideology, Tomura tries to kill him along with Himiko. However, Kurogiri stops the trio and Tomura storms off. Dabi summarizes the encounter as 'weird'.

Despite the rough start, Dabi follows Tomura's commands. Tomura considers him and the rest of the Vanguard Action Squad as 'reliable comrades'. Dabi is also one of the few members who tries to expand the League. Before setting off to continue fighting Gigantomachia, Dabi declines reasoning he doesn't want to fight Gigantomachia and that he has a really good prospect waiting. Tomura allows this and insists Dabi bring along the new prospect. Dabi appears to take cues from Tomura, deciding to go all-out on the remaining MLA soldiers after seeing Tomura do so.

Himiko Toga
During their first meeting, Tomura calls Himiko a brat and freak due to her excited attitude as well as for her abnormal fanaticism for Stain. Giran comments that Himiko can be useful. However, unimpressed and in a bad mood, Tomura tries to attack her and Dabi but the three are stopped by Kurogiri. After Tomura's departure from the meeting, Himiko confesses that she thought she was going to die.

When Tomura tells Kurogiri that it doesn't matter if the Vanguard Action Squad succeeds or fails and Kurogiri responds with describing the group as "disposable pawns" Tomura erupts, saying that he sees Himiko and the other as reliable comrades with useful strengths.

When Overhaul requests Himiko and Twice to take part in his plan, Tomura responds that they are his "cornerstones". Upon hearing she has to work for Overhaul, Himiko playfully pulls a knife on Tomura while asking why does she have to do things she doesn't want to. Tomura pulls off his hand revealing a calm and decided face. He tells her and Twice that they will help Overhaul for him, themselves and the rest of the League and that he believes in them. This talk results in Himiko and Twice creating the havoc that Overhaul tried to avoid.

All Might
Until he attacked the U.A. High School, Tomura never met All Might in person. Despite this, since the very beginning he professes an irrational hatred to All Might.

Tomura hates the society of current Heroes society, considering it all the wrong and erroneous, and focuses all that contempt on All Might, which he considers responsible for this situation. He despises his mere existence, which is what causes regular civilians to be happy about almost everything, perpetuating the status quo.

Apparently, the catalyst of this hatred was an accident in his childhood in which someone close to him died, and no hero came to save him, being rescued only by All for One, who would take him as a disciple and start educating him with his ideals, feeding the flames of that hatred.

They finally met in U.S.J. Arc, when Tomura ordered a raid in the hopes to kill the symbol of peace. Disappointed because he is not there, Tomura decides to kill the students to see if that makes him appear. With the arrival of All Might, Tomura resumes his murder plan and after a long and arduous battle in which he takes All-might to the ropes, he fails, being forced to retreat after being seriously wounded.

The hatred towards All Might grew even more after he defeated and imprisoned his mentor.

On the other hand, All Might also despised Tomura Shigaraki at first, considering him as a criminal with a crazy desire to cause harm, however, after discovering that he is the grandson of his beloved mentor Nana Shimura, his perception about him changes, because now it is impossible to All Might see him as a mere criminal.

Izuku Midoriya
Izuku and Tomura mutually despise each other; Tomura despises Izuku for his admiration of All Might (someone he hates) while Izuku doesn't agree with Tomura's villainous actions. During USJ, Izuku saved All Might, which caused Tomura to take an interest in Izuku as shown when he watched Izuku's match during the U.A. Sports Festival. Later in Kiyashi Ward Shopping Mall (Wookiees), they unintentionally met each other again, so Tomura decided to talk with Izuku about the difference between him and Stain. Tomura also made sure Izuku didn't try to struggle by threatening him and the civilians in the area.

After hearing Izuku's thoughts on the matter, Tomura realized his goal and thanked Izuku for helping him see it was clear that All Might needs to be eliminated. Before leaving the shopping mall, Tomura declared that the next time they met, he would show Izuku no mercy.

Tomura is considered a dark reflection of Izuku. While Izuku is working to become the greatest hero, Tomura is working to become the greatest villain.

Katsuki Bakugo
Tomura first met him in the USJ, he nearly attacked Katsuki and the others before All Might appeared. It is shown he took an interest in him after the latter won the U.A. Sports Festival and made plans to procure him, which was successful.

When they met again, Tomura offered him a place in his organization since they both want to do what they want. Katsuki refused as he voiced his admiration to All Might and was intent on being a hero. Katsuki even attacked Tomura and stood defiant at the latter's possible retaliation. At the end, Katsuki was rescued by his classmates and likely considers Tomura an enemy.

Stain
Tomura has a deep disdain for Hero Killer: Stain. They first met when Kurogiri tried to recruit Stain to their party. The meeting went poorly and Stain ended up injuring Tomura, but allowed him to live so that he could gain some conviction and seeing they weren't so different.

This only annoyed Tomura, and he even tried to eliminate the Hero Killer by having the Nomu's ravage Hosu City. This plan ended up backfiring and Stain became more infamous than Tomura and the Nomu's. Even after Stain was captured, his influence continued to bother Tomura. His sympathizers Dabi and Himiko aggravated Tomura to the point where he even decided to attack them.

In order to get this weight off his shoulders, Tomura confronted Izuku Midoriya. After this conversation, Tomura discovers his true hate for Stain comes from his connection with All Might. Wishing to create a world without All Might, Tomura develops his own conviction and states he will use Stain's ideology as a stepping stone for himself.

Overhaul
Tomura showed an intense dislike for Overhaul due to his arrogant attitude after he remarked about their lack of planning. He only sees their influence as a means for his motives. The League of Villains initially had interest in Overhaul and his organization before coming into a disagreement when Overhaul brought up his motives.

The meeting caused a conflict between the two, resulting in casualties on both sides, further angering the League. Despite this unstable relationship on both sides, Overhaul still saw value in the League and encourages them to figure things out before contacting him again.

Overhaul also treats the league with some level of level-headedness and sentiment, as he wanted to bring out the full potential of the league by having them work under him. He only acted violently when the league threw the first punch and apologized to Mr. Compress for destroying his arm.

However, when he was defeated by Izuku and being transported to a hospital Tomura attacked the police escorting him. Tomura voices his reasons for hating Overhaul who was not fazed by their appearance but he got angry when they stole his Quirk drug however, his rage turned to fear as Tomura decayed and cut off one of his arms and Mr. Compress took the other arm. Tomura then gleefully taunted the now helpless and powerless Overhaul who was reduced to screaming as Tomura made off with his creation.

Re-Destro
He doesn't appear to have much a view on him, though believes his actions are a nuisance to his own goal. They later spoke and Tomura insulted him, though Rikiya retorted back by stating the numbers of his army and revealing he knew where to locate them. Rikiya stated Tomura and his forces are too notorious and he needs them gone to make his own army known. He personally gave Tomura the option of joining them or have his league destroyed.