Gyuki

Gyuki (ぎゅ機, Giyuki) also known as the Roaring Sea (ロアリングシー, Roaringu ​​Ume) is a and a member of the Scott Family. Unlike the other senior members of the family, Gyuki has no official position and spends most of his time resting in the Lake of Noah, looking over its companions that are still growing.

Gyuki has known Ranmaru for decades and the two are incredibly close to one another. Gyuki considers Ranmaru his master and follows him without a moment's thought. Izuna has mentioned once that Gyuki would do anything for Ranmaru, even take its own life if need be.

Haki
Kenbunshoku Haki: Color of Observation

Busōshoku Haki: Color of Armaments

Haōshoku Haki: Color of the Conquering King