Frollo should definitely win this. From his intimidating presence throughout The Hunchback of Notre Dame as the most powerful, yet most intolerant person in Paris, thought-provoking and real-life style of villainy as he hypocritically does all his evil deeds while still thinking he is a righteous, just person, and smooth but creepy voice that really amplifies his calculated personality, and also leads to his villain song being the best Disney villain song due to its willingness to take risks, Frollo really does have an aura of fear just like any Disney villain should have, but in a more personally resonant, real-life manner for me.
In danger:
Ursula
Maleficent
Scar
Jafar
Claude Frollo
Cruella De Vil
Shere Khan
Hans
Dr. Facilier
Gaston
Safe:
Haha, you're dead:
The Stepmother
The Horned King
The Evil Queen