The Lost Twenty referred to the group of Jedi Masters, numbering twenty in total, who had renounced the Jedi Order throughout its history. One notable, (and the twentieth), member of the Lost Twenty was Master Dooku, who abandoned the Jedi after the death of his former Padawan, Qui-Gon Jinn, at the Battle of Naboo in the years preceding the Clone Wars. Dooku, having also become disillusioned with the Galactic Republic, peacefully left the Jedi Order while secretly pledging his allegiance to the Sith as Darth Tyranus. Dooku, along with the rest of the Lost Twenty, was commemorated with a statue bust in the Archives of the Jedi Temple on Coruscant.