This list of mythical creatures that begin with this letter and I am constantly gathering information from each continent, and is continually being updated.
Bendigeidfran (Welsh)
Bran the Blessed (Welsh: Bendigeidfran or Bran Fendigaidd, literally "Blessed Crow") is a giant and king of Britain in Welsh mythology. He appears in several of the Welsh Triads, but his most significant role is in the Second Branch of the Mabinogi, Branwen ferch Llyr. He is a son of Llyr and Penarddun, and the brother of Branwen, Manawydan, Nisien and Efnysien. The name "Bran" in Welsh is usually translated as crow or raven.
Celtic sea-deity, later described as a king of Britain; a leading figure in early Welsh narrative. ‘Bendigeidfran’ or Bran ‘the Blessed’ is a form that may pre-date the introduction of Christianity, but it was preferred by Christian scribes who thought that Brân had helped to bring the faith to Wales; it is none the less the form used in translations of early secular narratives. Bendigeidfran is the son of Llyr, brother of Branwen and Manawydan and half-brother of Efnisien.