Feh

Feh is an owl in Fire Emblem Heroes and a messenger for the Order of Heroes.

Feh takes residence in the player's Castle on a special perch. Normally, Feh is asleep, but will awaken whenever the player receives an in-game gift.

Feh also runs a special YouTube series called Feh Channel, where she helps to announce upcoming events in Heroes.

(Source: Fire Emblem Wikia)