The Elcor are from the high-gravity planet Dekuuna. They are massive, elephant-like creatures, standing on four muscular legs for increased stability. Elcor speak and move slowly, an evolved response to a world where a fall or mistake can be deadly. This has affected their psychology, making them monotonous and conservative.
Elcor speech is heard by most species as flat and tedious. Among themselves, scent and extremely slight body movements convey shades of meaning during speech. Since their subtlety can lead to misunderstandings with other species, the Elcor often go out of their way to clarify their emotions.
 Discovering the Citadel
Around 300 years after forming the council, the Asari wandered into a system controlled by the Elcor. With help from the Asari, the Elcor manage to discover their closest Mass Relay in just one Elcor lifetime which propels them into Galactic space and gains them an embassy on the Citadel.