Advice from Voldemort, Darth Vader lol
From Negan to Voldemort: Career lessons from classic celluloid baddies (www.theladders.com)

They have advice from a bunch of famous villains, but I thought this was interesting:

"Darth Vader (Star Wars): Don’t lead with fear"

Some of the worst bosses I've had were ones that thought fear was a good way to get people motivated. Sure, I did the thing, but I hated doing it.