Jason Momoa , who rocketed to superstardom in Justice League (2017) and Aquaman (2018), “Charmed” stars Holly Marie Combs and Brian Krause, Richard Grieco (A Night At The Roxbury, "21 Jump Street"), Thomas Ian Nicholas (Rookie of the Year, American Pie), Sam J. Jones (“Flash Gordon”) and pro wrestling legend The Honky Tonk Man are the first celebrities announced for Wizard World Sacramento, set for September 20-22 at Cal Expo. Momoa will appear on Saturday, Sept. 21; Combs, Krause, Nicholas and Jones are scheduled to attend all three days; Greico and Honky Tonk will appear on Saturday and Sunday. Other stars will be announced closer to the event. Momoa had significant roles in the popular series "Baywatch" and "Stargate: Atlantas" before a turn as "Khal Drago" on the acclaimed "Game of Thrones" was followed by his first appearance as "Aquaman" in Batman vs. Superman Dawn of Justice in 2016. That led to a larger role