(4) General Grievous
General Grievous is introduced in the beginning of the
Revenge of the Sith. He has taken Chancellor Palpatine hostage, but the chancellor was rescued by Anakin Skywalker and Obi-Wan Kenobi. Grievous, though, is able to escape. Kenobi, however, was able to track Grievous to the planet Utapau where Grievous is trying to regain control of the war after the death of Count Dooku. Despite being mostly droid, Grievous still has a beating heart which Kenobi was able to destroy with a blaster - even if it is uncivilized for Jedis to use.
(13) General Veers
General Veers is the leader for the Empire during the Battle of Hoth. The Empire had located the secret Rebel base after a probe droid sent date back to the ships. Vader appointed Veers to lead the attack aboard an AT-AT vehicle that had a hard outer shell which made it difficult for the Rebel weaponry to penetrate. After his AT-AT destroyed the Rebel's shield generator a snowspeeder crashed into his transport. Despite the destruction of the AT-AT all men in the cockpit survived, but (this is not in the movie but in his bio) Veers lost both of his legs and spent the rest of his life in a hover chair.
