Arrow is a reindeer who serves as the leader of Santa Claus' reindeer. He is war-hungry with little regard for the colony as a whole (especially the army's battle against the Wolves), which becomes evident when he ultimately betrays everyone, including Santa but excluding his own army, by flooding the underground in an attempt to "wash away the past".
He intends to marry Princess Zoey, making her his queen and the mother of many fawns, but she calls off the wedding and rejects him after becoming suspicious of his plans. After successfully flooding the underground, the would-be-dictator's scheme is foiled when Rudolph, Zoey, and the others form a ladder with their own bodies to escape from the rising waters. Arrow attempts to kill Rudolph but ends up falling into the underground before smashing into an upturned rock, killing him on impact.