Who can use Observation Haki?

Monkey D. Luffy uses Observation Haki and improves it during battle.

Ch. 884 Suggest an edit Report

Vinsmoke Sanji uses Observation Haki to search for a target among fish.

Ch. 672, p. 8 Suggest an edit Report

Charlotte Katakuri uses advanced Observation Haki for limited future sight.

Ch. 860, p. 9 Suggest an edit Report

Silvers Rayleigh teaches and demonstrates Observation Haki to Luffy.

Ch. 894 Suggest an edit Report

Monkey D. Luffy senses anger and intent through observation haki during training.

Ch. 894, p. 3 Suggest an edit Report

Silvers Rayleigh teaches Luffy to sense feelings of living things as part of observation haki.

Ch. 894, p. 4 Suggest an edit Report

Monkey D. Luffy uses Observation Haki during his fight with Charlotte Katakuri.

Ch. 884 Suggest an edit Report

Charlotte Katakuri uses Observation Haki to see the future like Luffy.

Ch. 891, p. 10 Suggest an edit Report