Jak Sivrak was a male Troig existing in the time period of the New Republic era. Sivrak's role was as the announcer for the races occurring on the Colossus refueling station, situated on the ocean planet called Castilon.
The character Jak Sivrak was conceived and brought to life for the animated show Star Wars Resistance, with Greg Proops providing his voice. Proops had earlier voiced Fode in The Phantom Menace and Tal Merrik in The Clone Wars. The name Sivrak is a reference to Lak Sivrak. Sivrak's initial visual representation was in the first story of Star Wars Adventures (2017) 16's, "All Aces Battle Royale," released on December 19, 2018. Although the comic did not explicitly name him, Chris Wyatt verified that the character depicted was indeed meant to be Sivrak, according to the script.