Caraxes fought in the Stepstones with Daemon Targaryen in a conflict sometime before the Dance of the Dragons. With his help, Daemon took Harrenhal during the Dance.
Atop Caraxes, Daemon challenged Aemond Targaryen to a duel at Harrenhal. Aemond rode Vhagar, who was larger than Caraxes. All four were killed in the fight over the God's Eye, when Daemon jumped from Caraxes in mid-air and killed Aemond, while Caraxes and Vhagar crashed. Vhagar drowned and Caraxes managed to swim ashore before sucummbing to its injuries.