Darius had tanned skin, short unkempt black hair and small light silver-colored eyes. He wore the typical uniform of a member of the Scout Regiment.
Darius is present while Erwin gives the recruits a speech. When Erwin informs the recruits of the scouts' high mortality rate, Darius attempts to warn him not to be too hard on the troops, lest none of them join.
During the 57th Exterior Scouting Mission, his squad tries to ambush the Female Titan. As each of his squad members are killed in short order, Darius attempts to flee from the village to warn the other members of the power and unpredictability of the mysterious Titan, but his horse is not fast enough to escape its sight. The Female Titan catches up and kicks him and the horse into the air, killing them both instantly.