Unalaq, Steppenwolf (Joss Whedon) and Sentinel Prime (Bayverse).
Frollo was meant to be a downright evil person with a twisted sense of righteousness, unlike Unalaq who was supposed to be a well-intentioned person.
Aku, Randall Boggs, Mrs. Tweedy, Scroop, Queen Grimhilde and the Overlord.
Starscream for Megatron in Transformers Prime and Randall for Waternoose in Monsters Inc.
“Where’s your kid now sheriff?!” From Lots-O-Huggin’ Bear
“Long live the king.” From Scar (Disney)
“It tore me apart, but I learned an important lesson: you can’t count on anyone, especially your heroes.” From Syndrome
”Remember, reality’s an illusion, the universe is a hologram, bye gold BYYYEEE!” From Bill Cipher
”No Robin, I won’t stop. Not now not ever. I am a thing that keeps you up at night. The evil that haunts every dark corner in your mind. I will never rest, and neither will you.” From Slade
Starscream (Prime) serves Megatron (Prime).
I’m sure Woody did fight him off while inside the dumpster seconds before the truck arrived and the other toys fell in.
Bill Cipher turning Wendy, Gideon, McGucket, Soos, Robbie and Pacifica into tapestries.
Lotso, Nick Goode, Light Yagami and Belos.
Morgaroth has Dark Mayhem.
Belos has the Collector
Palpatine has Vader and Dooku
Mrs. Tweedy has Dr. Fry
Cutler Beckett has Davy Jones
Palpatine, Lots-O, Frollo, Belos, Anton Chigurh, Syndrome, Light Yagami, Bill Cipher, AM, Mrs. Tweedy, DIO, Ridley, Voldemort and Sauron.
Unalaq and King Magnifico.
No, since Krang One is more evil than the rest of his race and dismissed the members of his kind as weaklings for not surviving in the prison dimension.
Frollo: Lust
Lots-O: Wrath
Scar: Envy
Mrs. Tweedy: Greed
Emperor Belos: Pride
Joffrey Baratheon: Sloth
Red Death: Gluttony
Lotso abandoning Woody and his friends to be incinerated even though they saved him earlier and Scar coldly pushing Mufasa off the cliff.
Syndrome: how rejection can corrupt you if you don’t let it go.
Thumper
Mephiles the Dark and Mrs. Tweedy.
One of my favorite cartoon villains and one of the best modern villains.