Maulkiller

Maulkiller was a hybrid clone created on the planet Kamino by Darth Vader, a Sith Lord. Maulkiller was created by combining genetic material from the Zabrak Darth Maul and the Human Galen Marek.

Creation and Death
He was the hybrid to be created by Vader, but due to his mental instabilities, Maulkiller became very destructive. Vader had his Dark Apprentice, Mal Marek to deal with him, but the Dark Jedi Hybrid was stroing to avoid his attacks. Together, Darth Vader and Mal defeated the clone and threw the hybrid's body into the water. Vader decided to create the original human clones of Galen Marek instead of making a hybrid.

Resurrection
During the formation of the Dark Empire, Joruus C'baoth discovered the hybrid in a brief recording that was set on Kamino. Meeting the Prophets of the Dark Side, they were able to resurrect Maulkiller. Maulkiller was still destructive, but Joruus was able to control the hybrid and makes him his apprentice.