Brox Anthar, a male Snivvian with a light complexion, was a criminal operating during the Galactic Empire time. He was a wanted man, pursued for numerous instances of grand larceny against the SoroSuub Corporation between approximately 8 BBY and 2 BBY. Consequently, SoroSuub enlisted the help of the Benelex Marshal Service, who dispatched Marshal Buck Vancto to capture the Snivvian outlaw. The marshal followed Anthar's trail to the planet Hosnian Prime.
After acquiring details about his target from a Pa'lowick bartender, Vancto spotted Anthar fleeing along a street and began chasing him from the rooftops. Anthar was subdued when his pursuer struck him with an electrified bola, causing him to fall. As Vancto descended and read Anthar his rights, a Twi'lek contacted the marshal, offering him another assignment. Anthar's attire consisted of a yellow and black top, paired with brown pants, a black belt, gloves, and boots.
The first issue of the Star Wars: Han Solo & Chewbacca comic series marked the debut of Brox Anthar. This comic was written by Marc Guggenheim, with illustrations by David Messina, and was released by Marvel Comics on March 9, 2022.