Did Zoro Use Conqueror's Haki. According to Kaido Kid can use Conquerors Haki. The Roronoa also joins the ranks of the powerful pirates.
Zoro doesnt officially have it he has the other two haki but not conquerors haki. Zoro said to Brook that he should know that this wasnt him. No Oda did right and introduced Zoro having Kings Haki in the chapter appropriately called Conquerors Haki where after he stalled with the concept of Kings Haki for many years he finally moved it forward by showing it has actual useful BATTLE application against the very strongest.
For what its worth Rayleigh had it.
A bounty hunter tries to attack Zoro but then stops and intimidates along with his fellow bounty hunters. Nov 29 2021 Chapter 1033 confirms that Zoro has unlocked ADVANCED Conquerors Haki. A bounty hunter tries to attack Zoro but then stops and intimidates along with his fellow bounty hunters. It was masked by the earthquake kaido caused when he sent onigashima flying.