During the Rage of Dragons of 1373 DR, Buchembrallor declared war on all ships of Wealdath and with the help of Linussaxannol he destroyed a large portion of the coast. Later, the local sailors put a bounty on his head.
Buchembrallor was overconfident, believing all creatures of his size or smaller were surely inferior to him and always started a battle with them. Thank to this system, he had acquired a hoard larger than most dragons his age had.
Buchembrallor forged a friendship with Linussaxannol, whom the green dragon respected.