Gathimu was a member of the Salamanders Firedrakes. Praetor had appointed Gathimu to watch over the troubled Tsu'gan. On the world of Selpuchre IV Gathimu formed part of a squad of Firedrakes sent to rescue a relic after the Sisters of Battle defending the world were attacked by the Red Rage. During the fighting the Firedrakes were attacked by a Daemon Engine. Gathimu gave his life to delay the daemon from reaching his brothers and the relic.