When Gárulf was killed in battle, the horse served Éomer and his company. When they encountered Aragorn's party, Éomer gave Hasufel to him in compensation for the presumed deaths of Merry and Pippin, Éomer gave Legolas the horse Arod, and gave Hasufel to Aragorn.
He rode it across much of the plains of Rohan but the creature fled in fear with Arod when an old man (Most likely Saruman) came to where the Three Hunters were camping to spy on them. The horse returned with Shadowfax some time later.
Hasufel was apparently a Rohirric word that meant 'dark skin'.
Portrayal in AdaptationsEdit
In the film The Lord of the Rings: The Two Towers (2002), Hasufel was a chestnut color.