Gendo has an appearance of a typical middle-aged man. He has a hair shape similar to Shinji's, but with a beard.

His usual attire is a NERV black commander's uniform with gold lines sewn on the edges of the jacket, and green triangular identification pieces sewn at the sleeves and the necklace. Beneath the uniform, He wears a red sweater. A pair of white gloves and brown filtered glasses.

Gendo is Shinji Ikari's father, a brilliant scientist and an extremely cold and distant father.