You got Anakin! Anakin Skywalker greatly cares for others, however, his greatest flaw was that he had attachment issues, and wouldn't give up on others, searching constantly to find out ways to keep them alive. He was motivated by his love for others, and was clever, daring, and witty.

You got Vader! Darth Vader was an angry person. He was motivated by his self-loathing, his anger towards Obi-Wan, and his desire to appease the one person he felt was left to understand him: Palpatine.