The sprawling lore of "Stargate Sg-1" can get really confusing after a point. A lot happens in the Syfy channel show's 10-season run, and chaos is bound to follow when you throw alternate timelines and resurrected characters into the mix. During the adventures of the series' titular crew, they cross paths with the Goa'uld, aquatic symbiotes who can take over and control the bodies of other species. Nothing good ever comes from using this ability, as the Goa'uld feel no remorse while enslaving worlds or presenting themselves as the galaxy's tyrannical saviors. They have leaders, of course, known as System Lords, who use their near-immortality to subjugate humanity, such as the false god Ra (Jaye Davidson) in Roland Emmerich's "Stargate."

Although all System Lords are dangerous, the most formidable among them is Anubis, who can easily be classified as one of the biggest antagonists of "Stargate Sg-1." In fact,...