E-Btr was the Luminoth who founded Sanctuary Fortress. He lived for nearly five centicycles, making him one of the oldest Luminoth on record.
E-Btr died in hand-to-hand combat with the Ing during the first attack on Aether. A statue is erected in his honor in the Transport to Temple Grounds of Sanctuary Fortress.
- ↑ 1.0 1.1 "This is a statue of E-Btr, the founder of Sanctuary. He lived for nearly 5 centicycles, and died in hand-to-hand combat during the first Ing attacks." —Scan Data (Metroid Prime 2: Echoes)