Tensei Ida

Tensei Iida (飯田天睛), also known as Turbo Hero Ingenium (ターボヒーロー・インゲニウム), is the older brother of Tenya Iida and a Pro Hero.

Ultimate Space & Jams Arc
Ingenium is briefly mentioned by Tenya, when talking about his family.

Sports Festival Arc
Ingenium is heavily injured by Stain and left for dead. However, the police find him and he is taken to the Hosu General Hospital for emergency treatment. Tensei undergoes an operation that saves his life. Afterwards, Tenya immediately barges into the room to see his older brother. Tensei, despite being weak, speaks to his younger brother, apologizing to Tenya for being unable to be the role model that Tenya sees him as.