Though the same colors as Broken-Hand, Blue Brow's are lighter to indicate his age.
He was formerly the second-in-command of Broken Hand's pack. After a fight, he defeated and banished Broken Hand and became the new leader of the pack. Blue Brow mated with the new pack member White Tip in the future and she produced five offspring (only three survived). Later, on a hunt, Blue Brow, the two female Velociraptor pack members, and a Bull Protoceratops were buried alive under the collapsing sand. Millions of years later he and the Protoceratops were found together locked in combat.
- In the episode, Blue Brow is represented as the Velociraptor in the Fighting Dinosaurs fossil.
- He's the first character to be based on a fossil discovery.