Raymond Park is a British actor, stuntman and martial artist, best known for his playing the physical part of Darth Maul in Star Wars Episode I: The Phantom Menace, Toad in X-Men, Snake-Eyes in G.I. Joe: The Rise of Cobra, and Edgar on Heroes.
This is basically how I'd imagine Disney would do a TV series focused entirely on the Canon Sith Lords (with some old Expanded Universe ones being Recanonized too). Tales Of The Jedi was a major success, so I think a Tales Of The Sith series is very likely to happen sometime in the near future. Let me know down in the comments below if you would want a Tales Of The Sith series to come in the foreseeable future.