Kei Kurono

Age: 17
Gender: Male   

Height: 168 cm

Kei is a 10th grader summoned by Gantz, along with Kato, after being hit by a subway train in an effort to help a hobo passed out on the tracks.
Initially Gantz refers to Kurono as "Bitch" and "Loser", though he settles on "Kurono" as the series progresses.