Shoto Todoroki trains as a hero student at U.A. High School. His appearance is marked by heterochromia—a gray right eye and a turquoise left eye—and striking red-and-white split hair. A prominent burn scar covers the left side of his face, inflicted during childhood when his mother, Rei Todoroki, poured boiling water on him during a mental breakdown caused by abuse from his father, Endeavor. This scar embodies his traumatic family history. Endeavor orchestrated a Quirk marriage to breed a child capable of surpassing All Might, resulting in Shoto inheriting the dual Quirk "Half-Cold Half-Hot." This power lets him generate ice from his right side and fire from his left. Endeavor subjected him to brutal training starting at age five, isolating him from his siblings and fostering deep resentment. Shoto initially rejected his fire abilities, seeing them as an extension of his father's cruelty, symbolizing this rebellion by covering his left side with ice in his first hero costume. Shoto's personality was cold and aloof, leading him to avoid social interactions. His battle with Izuku Midoriya during the U.A. Sports Festival became pivotal. Midoriya's insistence that Shoto embrace his full power rekindled memories of Rei's encouragement that he could define his own destiny. This prompted Shoto to use his fire in combat for the first time. After the festival, he reconciled with Rei and gradually accepted both sides of his Quirk, though his resentment toward Endeavor endured. He acknowledged Endeavor's heroic capabilities but maintained emotional distance, stating forgiveness required active effort. In the "Make It! Do-or-Die Survival Training" OVA, occurring during provisional license exam preparations, Shoto participated in a disaster rescue exercise within a collapsing shopping mall. Paired with Fumikage Tokoyami, he froze falling rubble for protection. When Dark Shadow went berserk in low light, Shoto prioritized containing structural damage. After Katsuki Bakugo's group restored emergency lighting, Shoto collaborated with Bakugo to escape rising floodwater. He created an ice platform for elevation while Bakugo blasted escape routes. When the platform lodged between floors, injuring Bakugo, Shoto assisted in regrouping with classmates. His tactical skill emerged as he identified a critical flaw in their escape plan: freezing surface water would increase subsurface pressure, risking explosive bursts. He adapted by proposing controlled geyser creation through coordinated ice and explosion attacks, enabling their ascent. This highlighted his analytical crisis management and willingness to cooperate, though he still preferred solo operations when feasible to avoid friendly fire. Throughout his training, Shoto's costumes evolved to reflect his acceptance of his dual Quirk. His updated gear incorporated temperature-regulating wrist guards and a utility belt for medical supplies. After U.A., he became the No. 2 Pro Hero. His relationship with Endeavor remained complex; he distanced himself from his father's legacy while occasionally acknowledging his mentorship. The revelation that the villain Dabi was his presumed-dead brother Toya further complicated family dynamics, strengthening his resolve to forge a heroic identity distinct from Endeavor's.