Kel Dors were a sentient species originating from the planet called Dorin. Because of the need to endure environments rich in oxygen, they utilized specialized breathing apparatuses that shielded both their eyes and nostrils. Plo Koon, a Kel Dor Jedi Master, served on the Jedi Council during the concluding years of both the Jedi Order and the Galactic Republic. Furthermore, Bo Keevil, a member of this same species, functioned as a pilot within Ace Squadron.
The Kel Dor were a humanoid species of considerable height, possessing hands with three fingers and one thumb. Their thick, tough skin provided resilience, enabling them to withstand the vacuum of space for a limited time. When venturing offworld, Kel Dors employed masks to purify the air, as oxygen acted as a poison to their system. Additionally, they wore goggles to prevent the desiccation of their ocular fluids. From a genetic standpoint, they shared a distant relationship with the Gand and Tognath species, both of whom also used breath masks when outside their native environments.
Kel Dor society was structured around clans. The antiox breath masks worn by Kel Dors featured decorations and patterns unique to their respective clans.
As a form of greeting, members of the species would say "Koh-to-yah!", which means "greetings!" in their language.
The Kel Dor had direct representation in the Galactic Senate. The Senate Building contained several rooms specifically designed for the Kel Dor delegation, equipped to eliminate the need for antiox masks.