Gethin Anthony Gethin Anthony

Gethin Anthony is about to play a man who would send any shadow baby assassins running scared. Anthony, whose Game of Thones character Renly Baratheon was offed by a dark-magic toddler in the HBO drama's second season, has joined NBC's Aquarius as Charles Manson, TV Line reports.

Seven hells! Game of Thrones' most shocking deaths

Aquarius is being set up as a 13-episode miniseries and stars David Duchovny as an undercover cop who goes after a budding cult leader—Manson—and his "family." NBC's official Aquarius Website lists no premiere date, merely saying it's "coming soon."

Also joining the cast are FridayNight LightsGrey Damon, who will play the partner of Duchovny's character, and BunheadsEmma Dumont, who plays one of Manson's followers.

What do you think of this casting?

Watch This Tonight: See why Treehouse Masters is today's editors' pick: