Haki

Haki is the use of an individuals willpower to achieve super human feats.

Conquerors Haki Users:

Alive:

Ike D Mike: First used it when his sister was killed by Markus

Levos: Used it for the first time at the Tamwall Empire in the fight with Aztec

Dead:

Earl Effman: Was born with it but never learned to use it. He was killed by the Broken Bull Shark Pirates.

Rita: Like her brother, she was born with the ability but never learned to use it. She was killed by the Broken Bull Shark Pirates

All Haki Users

Goldbeard: The Strongest Yonko of the Golden Era and surely has all forms of Haki

Davy D Jones: The Third Strongest Yonko that is revealed to know all types of Haki

Lushius D Bobo: Never used them but is mentioned to know all forms of haki