Place of Origin: Whisperer's Caverns
All we know of Ekko was mentioned in retrospect by Captian Ijago. Ekko was a Whisperer during the leadership of Empress Ahamai, and was in charge of guarding the prison cells in the bats' domain. S/he, Eech, and Greeneye were slain by Rugg Tornpaw, a searat they were holding captive; he stabbed all three when he was making an escape. The bodies were later mummified and dropped in a bottomless pit, as was Whisperer custom.
Ekko was a minor character. Nothing else is known.