10 Best Sci-Fi TV Show Villains

10. The Governor - The Walking Dead

Starting off, we have The Governor from AMC's The Walking Dead, who served the main antagonist in Seasons 3 and 4. Played brilliantly by David Morrisey, this initially charismatic leader holds many sinister secrets and eventually comes into conflict with Rick Grimes and the other members of the group.

The unnamed villain appears welcoming at first, carefully managing his own community, but when he loses both an eye and his undead daughter at the hands of Michonne, his character explodes in a violent rage. He becomes hellbent on destroying his enemies, brutally executing members of his own side when they refuse to follow orders.

Negan may be the most brutal foe Rick and company have faced, but the Governor made an impact for how sinister and calculating he was throughout his on-screen appearance. He slyly charmed and coerced an entire community in believing his lies at Woodbury and then did the same for a band of outcasts on the outside, winning himself an army to assault the main cast's prison haven.

On top of this, he also brutalised many a character on Rick's side, from beating Merle to a pulp to decapitating Hershel in Season 4's climatic showdown. The Governor stands out as one of The Walking Dead's most unsavoury antagonists.