2017 Outfest Los Angeles LGBT Film Festival - Opening Night Gala of 'God's Own Country' - Arrivals"Westworld" is expanding! Two new actors are joining the cast of HBO's sci-fi Western drama in Season 2.

Jonathan Tucker ("Kingdom," "Justified") will play Major Craddock, "a commanding military officer," while Neil Jackson ("Sleepy Hollow") is "a charming and resourceful man who finds himself in uncharted territory."

They join "Leftovers" alum Katja Herbers as Season 2 newcomers; Herbers plays a seasoned guest of the Westworld park.

Not much is known about the second season. Craddock could be part of the army that has already been a presence in the park, or a "real-life" military man sent to subdue the revolting hosts. As for Jackson's character, he could be a guest who wanders into a dangerous area of the park — or perhaps even the new area that Maeve got a glimpse of in the finale.

The casting news comes just before the show's Comic-Con panel in San Diego. The panelists include Ben Barnes, Ingrid Bolsø Berdal, Ed Harris, Luke Hemsworth, James Marsden, Thandie Newton, Simon Quarterman, Rodrigo Santoro, Angela Sarafyan, Jimmi Simpson, Tessa Thompson, Evan Rachel Wood, Shannon Woodward and Jeffrey Wright.

"Westworld" recently received 22 Emmy nominations, including Best Drama and all four of the drama acting categories.