The following post contains spoilers from chapter 290 of My Hero Academia. You have been warned.
The biggest character reveal in the series has finally arrived! Dabi is Toya Todoroki, the eldest child of Endeavor and the eldest brother of Shoto Todoroki. For years, fans speculated that Dabi was Toya because of his apparent obsession with Endeavor. Earlier in the story, it was revealed that Toya was abused by his father like Shoto and his other siblings were. Toya had stronger flames than Endeavor, but his body was too frail to handle them. Blue flames tend to be a lot hotter than normal flames and Dabi was always at risk of immolating himself when using his quirk. That further adds evidence to Dabi’s identity as Toya Todoroki.
When Toya was deemed a failure in the eyes of his father, he was discarded in favor of Shoto. Endeavor’s ultimate ambition was to produce a child who was stronger than All Might since Endeavor himself was not up to the task. This led to him abusing his child with brutal training and he would beat his wife when she tried to protect their children from him.
Eventually, Toya was presumed dead from a currently unidentified accident and Endeavor’s family blamed him for Toya’s death ever since. Endeavor also blamed himself for what happened to Toya and even erected a shrine for him in Toya’s old bedroom. Apparently, Toya did not die in that accident, but was physically and mentally scarred before turning into Dabi.
Now, we finally know what Dabi and Skeptic were planning. Dabi was using Skeptic to broadcast a video of him revealing his identity and backstory to the world. It was similar to how V highjacked all the televisions in London in V for Vendetta. Among the people watching Dabi’s video was his mother, Rei Todoroki, who was visibly shocked by what she saw. This is bad for Rei because she was already mentally delicate from being abused by her husband. If she finds out that her eldest son is not only alive but also a mass-murdering supervillain, that could push her over the edge. I would not be surprised if she mentally snaps and commits suicide out of grief. The rest of the Todoroki family will be just as devastated by this revelation and they may become pariahs just for being related to Dabi.
This is also bad for superhero society as a whole. Endeavor is the Number One Hero who people expect to protect them from harm. When the public finds out that their Number One Hero is a thug who not only abused his family but is the father of an infamous supervillain, the public will lose all faith and trust in him. Endeavor may have started making amends for his actions, but it is clearly too late. Dabi is the incarnation of Endeavor’s sins, the demon who will drag him into Hell.
While the public watches and listens to Dabi’s video, Dabi himself reveals his true identity to both Endeavor and Shoto. He washes out the dye in his hair and starts dancing like the Joaquin Phoenix version of the Joker. Endeavor was already blaming himself for Toya’s death and I think the revelation that his actions as a father turned Toya into Dabi will break him.
The monster Endeavor’s cruelty created has come to kill him and burn down everything he built. Endeavor’s power is at its limit and he has been grievously wounded by Shigaraki after being impaled through the chest. If Endeavor was fit and healthy, Dabi wouldn’t stand a chance. Now that Endeavor is wounded and weakened, killing Endeavor would be a relatively easy task for Dabi. All Dabi would need to do is use his blue flames on Endeavor to the point in which Endeavor’s overheating weakness kills him. Since blue flames are a lot hotter than normal flames, I think Dabi can do this very quickly.
The question is how Shoto would react now that he knows his long lost big brother is alive and a supervillain. Would he be emotionally compromised and be slow to fight his own brother? Would his hatred for Endeavor return after seeing what his father’s cruelty has done to Toya? This is clearly a Darth Vader scenario: “I am your father.”
Overall, this has been a long-awaited character reveal and it has exceeded all expectations. In my opinion, Toya Todoroki IS dead and Dabi is all that’s left. This is similar to how Anakin Skywalker became Darth Vader. Like Darth Vader, being burned alive apparently played a large part in Dabi’s transformation as a villain.