Jaculi is a muscular, young-looking man with black eyes and long black hair. He wears a mask that obscures his face save for his eyes, a headband, and has a dark yellow cape. He has on a sleeveless dark green top, black armbands that extend to his fingers, and sports a short knife.
Jaculi was let inside Markovburg by a Quraci refugee and dashed his way into the royal chambers. He stabbed King Viktor and Queen Ilona to death and attempted to escape, but he was intercepted by the Royal Guard, led by Frederick DeLamb. Jaculi subdued the guards and dodged Delamb's blade, but was shot in the back–much to his surprise–before he could flee.
Jaculi is a member of Jihad (later renamed Onslaught), a group of Quraci terrorists who faced the Suicide Squad. He has super speed, but can only use it in three second bursts. He was no match for veteran Flash villain Captain Boomerang, who easily killed him with a boomerang that hit him in the back.