The Duel on Leviathan was a small duel between Darths Revan and Malak, in which Revan emerged victorious and Malak lost his jawbone. The duel occured because of Malak's disobedience concering Telos IV. Malak had bombed the planet into submission rather than simply besiege it with a blockade. As a result, Revan punished Malak by attempting to decapitate him, but Malak blocked his attack. A fierce duel then ensued, which Revan eventually won.