Emperor Zwordar:
He's the greatly feared leader and utterly ruthless, murderous, bloodthirsty, cruel, heartless, sadistic, merciless, genocidal, iron-fisted, God-Wannabe dictator of the widely feared and extremely powerful and highly xenophobic White Comet Empire, a vast interstellar empire that has destroyed countless innocent worlds and are also known to enslave the survivors of those conquered planets that they find beneficial for their invasion plans. He's the main antagonist in Season 2 of the original "Space Battleship Yamato" franchise. He's arguably best known for being the greatest and most powerful adversary that the crew of the titular space battleship Yamato have ever fought against to date. He once brought the people of Earth to their knees, very nearly destroyed the Yamato, and he almost succeeded in destroying the Earth itself. His hands are stained with the blood of countless innocents worlds that he and his empire destroyed.
Great Emperor Skulldart:
Great Emperor Skulldart (otherwise known as High Leader or Emperor Scaldart in some translations) is the ruthless, cruel, sinister, heartless, a murderous psychopath, a genocidal, cowardly, pure evil supreme leader of the evil Dark Star Cluster Empire (known to fans simply as the Dark Nebula Empire). He was the unseen overarching antagonist in the film "The New Voyage" (1979) and the main antagonist in "Be Forever Yamato" (1980). In his true form, Emperor Skulldart has dark blue-ish skin and bright red eyes that give him a truly terrifying hideous, and demonic look, as oppose to the rest of his species, who normally have light blue eyes.