“Bramimond, one of the eight legends, devoted [itself] entirely to the dark. All emotion, all memory... dissolved in a river of dark. That is how [it] received the power to best dragons.” — Teodor, talking to the Lords about Bramimond.
Bramimond (Japanese: ブラミモンド Bramimonde) was one of the Eight Legends of Elibe who fought in the Scouring. It was a master of Dark Magic and wielded the tome Apocalypse. As such, Bramimond no longer has any "self".[2] Hector also notices this, and is baffled by the fact that its voice keeps changing.
(Source: Fire Emblem Wiki)
