Darth Bob

Darth Bob was a Twi'lek named Bob Marley and, after the death of his parents, was trained as a Jedi by his father's old friend, Aayla Secura. The Jedi Council refused to allow his training so he sought the help of other Jedi masters. All the masters he found refused his training because the council had said there was too much hatred in him. He was later found by Chancellor Palpatine who revealed his identity as Darth Sidious and trained Bob in the way of the Sith. After proving himself worthy by exterminating all Felucian Jedi, he gained the title Darth Bob. After Order 66 was issued, he was secretly assigned as Darth Vader's secret body guard, whose existence was only known to the Emperor. He was assassinated by J. K. Burtola who was hunting Vader. As he fell the Dark Lord pierced Burtola's heart with his Lightsaber, so both men fell at the same time.