Haki is a mysterious power that is found in every living being in the world. It is not that different from the normal senses. However, most people do not notice it or fail to awaken it. Broadly, there are two types of Haki common to everyone, given the proper training; however, there is a third type that only a certain group of "chosen ones" are said to possess. In simple terms, Haki is an ability to sense spiritual energy (Kenbunshoku), use life force (Busoshoku) and overpower enemies (Haoshoku).
Haki also can evolve as well Busoshoku Haki can evolve into Tetsubusoshoku Haki Kenbunshoku Haki Evolve evolve into Mangekyoshoku Haki and Haoshoku Haki can evolve into Saiko Haoshoku Haki
It was mentioned that all Marines with the rank of vice admiral and above, are capable of using Haki. So far the characters who have clearly shown the use of Haki or have been stated to be able to use it are:
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