Scar
The Lion King · 1994
Fratricide, a musical number, and a lifetime of resentment
He did not seize the galaxy. He was voted it.
Editorial estimates on a 0–100 scale, calibrated against every other character in the index. Not official canon.
Palpatine's real weapon is procedure. He engineers a war, positions himself as the only stable authority, and receives emergency powers by acclamation before anyone realizes what has happened. The lightning and the hood are theater; the actual villainy is a democracy dismantling itself while applauding. He is the franchise's most patient antagonist by decades.
He controls the government, the military and the only other person strong enough to stop him.
He relies on apprentices who resent him, and he consistently underestimates loyalty he cannot corrupt.
He converted a galactic democracy into an empire and built a weapon that destroys planets. The scale of harm is difficult to overstate.
The rare blockbuster villain whose real weapon is procedural. He is handed absolute power by a legislature, on camera, to applause.
He engineered a war, positioned himself as its solution, and was handed the galaxy by vote. It is the longest successful plan in blockbuster fiction.
He ranks here rather than higher because his true weapon is political, but the raw Force ability alone puts him above almost every human villain in fiction.
The Lion King · 1994
Fratricide, a musical number, and a lifetime of resentment
The Hunchback of Notre Dame · 1996
The darkest antagonist a major animation studio has ever released
Tangled · 2010
The villain whose weapon is a compliment with a knife in it