The Clown Prince of Crime
Super Freak
Except ANH Vader who tortured Princess Leia, watched Alderaan being destroyed without a care, personally killed Captain Antilles, Obi Wan Kenobi and a number of rebel starfighter pilots.
That's cute. Thanos killed his own daughter, torture the other one for fun, and wiped half of all living creatures in the universe single handedly and won.