Question: can sabo use conqueror's haki?
Answer: 9 Ace Can: Conqueror's Haki Ace has been confirmed to be a user of both Armament and Observation Haki in his novel. ... This was shown when Ace used his Conqueror's Haki subconsciously to knock out members of Bluejam Pirates. Sabo has only been shown using two types of Haki.