Enji Todoroki, also known as Endeavor, is the stoic and respected No. 1 hero in the popular manga and anime My Hero Academia. As the holder of the Fire power-type Quirk, he is feared by villains and admired by the public for his strength and dedication to his duty. A strict and demanding father, Enji's relationship with his children has been complicated, especially with his son Shoto, who inherited his father's fire power but also the ice power of Endeavor's estranged wife, Toya. His drive to be the best has often led him to take dangerous risks in the pursuit of justice, creating a complex figure who balances his role as a hero with his family life. Enji's interactions with other pro heroes and students at U.A. High School reveal a desire to atone for his past mistakes and a newly found camaraderie, particularly with his son and his son's friends.

Tengen Uzui is a retired Sound Hashira from the Demon Slayer Corps in the Kimetsu no Yaiba (Demon Slayer) series. Known for his flamboyant appearance, Tengen Uzui is a 23-year-old muscular man with white hair and fuchsia eyes, adorned with numerous ear piercings. His personality is as colorful as his looks, blending his imposing stature with a charismatic charm and an open affection for his three wives. He is a master of musical weapons, especially the nichirin blades and shamisen, showcasing his skills in combat and his creative flair. Tengen Uzui is a force to be reckoned with, known for his high spirits, competitive nature, and an unyielding determination to protect those he holds dear. His relationships with his fellow Demon Slayers, particularly his apprentices, Tanjiro, Zenitsu, and Inosuke, are built on respect and mentorship, pushing them to be their best in battle. Despite his brash exterior, Tengen harbors a compassionate heart and is fiercely loyal, being the pillar of strength for his wives and his comrades.

Shoto Todoroki is a central figure in the My Hero Academia anime and manga series, known for his impressive heteromorphic Quirk that allows him to control both fire and ice. His hair is predominantly white, with a red streak that matches his fire-related abilities, and his right eye is marred by a scar, a result of past trauma. Shoto possesses a calm and somewhat distant personality, often carrying the weight of his family expectations and his tragic past. Despite this, he is diligent and excels academically and in combat training. He has a complicated relationship with his father, Endeavor, and his brother, Natsuo, and harbors a sense of responsibility towards his peers. His Quirk is so distinctive that it often leads to him being singled out in both friendly and combative situations.