In My Hero Academia: World Heroes' Mission, Enji Todoroki, known as the Flame Hero Endeavor, appears in his capacity as the current Number One Pro Hero of Japan. He is a tall, powerfully built man in his mid-forties with prominent red hair, turquoise eyes, and often a stern, intimidating expression that matches his intense demeanor.

In the prelude to the film, Endeavor is entrusted with a critical evaluation of the trio of young heroes-in-training: Izuku Midoriya, Katsuki Bakugo, and his own son, Shoto Todoroki. He administers a rigorous test to determine their readiness to join a coalition of operatives assembled by the World Heroes Association. True to his reputation for a harsh, no-nonsense approach, Endeavor is a formidable opponent, using his immense power and aggressive fighting style to challenge the three students within a specially designed arena. His demeanor during this assessment is cold and stern, reflecting his professional focus, though there are subtle indications of a slight softening in his attitude towards the students under his guidance.

The personal complexities of Endeavor's life remain a significant undercurrent of his character. His relationship with his son Shoto is a central part of his identity and ongoing journey. Having spent years as an abusive father who viewed his son as a tool to surpass the former top hero, All Might, Endeavor now finds himself in a difficult process of atonement. The film’s narrative finds him in a transitional state, having inherited the title of Number One Hero due to All Might's retirement rather than through the victory he had always sought. He is a man burdened by the pressure of his new position and his past sins, struggling to navigate the responsibilities of being a symbol of peace while also trying to mend the fractured relationships within his own family, particularly his strained dynamic with Shoto.

Despite his desire to make amends, his interactions are often marked by an inability to communicate affection, leading to awkwardness and unresolved tension. In World Heroes Mission, the father and son are largely separated by the global nature of the crisis, allowing their respective character development to be informed by the work they have already put into their relationship, rather than requiring direct confrontation within the film. Endeavor's role is that of a mentor and a powerful asset for the heroes, but his arc continues to explore the dichotomy between his public duty as a flawless hero and his private struggle for redemption as a flawed father.