Kouki Inaba

First appearance in manga: Chapter 134 An ordinary Joe, gunned down in the Shinjuku massacre. His full-time occupation is later revealed to be as a designer. He is the only participant apart from Izumi that does not train with Kurono as he thinks Kurono should not be leader. He even sides with Izumi during the Tae Alien mission to assassinate Tae. Eventually, he realizes his only chance of survival is under Kurono's guidance. And at the end of the Oni mission, he gives Kurono his support. He is quite the coward when it comes to fighting, and tries to feign a cool head in these situations. It is hinted at numerous occasions that he is attracted to Reika, and he has admitted the fact to an Oni Alien he thought was Reika, subsequently having sex with the alien. After the Oni mission, he gains respect for Kurono and believes that Kurono could actually become the group leader. Despite the fact that Kurono dies, he still participates with the other Gantz team members in fighting the aliens. (Source: Wikipedia)