Anime

A fairly high-ranking member of Chaos Choir, Gladias doesn't seem to have any Edel Raids of his own, and is generally shrouded in mystery. He acts as a judge of different members of the organization, generally only appearing to deal out punishment. Gladias seems optimistic the few times he appears, despite the fact that he is often killing people.

Manga

Here he is a high-ranking member of Organite, and is confirmed to have an Edel Raid (which appears to be a Darkness-based sword). He is incredibly strong and is also willing to take out his allies if he needs to...and with the same strange optimism.