He did not appear onscreen until the episode "Seven Minutes to Midnight", as his character is part of the backstory and had died before the events of the pilot.

Avari has appeared with Brent Spiner in three different productions: Star Trek: The Next Generation (1987), Independence Day (1996), and The Master of Disguise (2002).

Avari was scheduled to reprise his role as Kasuf in the Stargate SG-1 Season Six finale "Full Circle", but was unable to do so due to his commitment to Dragnet (2003).

In January 2009, he played a mobile-phone salesman in Paul Blart: Mall Cop, and in October 2009, he was cast as Omar on Days of Our Lives.

In 2014, Avari voiced Master Rahool in the science fiction video game Destiny, a role he reprised in a sequel.