Vegapunk

Vegapunk is a gifted scientist in the world of One Piece who has been known to be able to clone devil fruits and humans, and also create human weapons beyond comprehension. His feats are extremely life altering and is the main factor for most offensive and defensive capabilities for the World Government and Navy. He has also eaten the "Nomi-Nomi no mi" which basically means brain brain fruit which allows his head to infinitely expand whenever he learns new knowledge. Meaning he can store an infinite amount of information with the downside of having a head twice the size of a bus.

His expertise is so sought after, that he made six "satellites" who take the form of somewhat humanoids and have their own consciousness comparable to that of Vegapunk. These satellites lets Vegapunk work many times more productive than usual. It should also be noted that these satellites represent different lifestyles and/or human need/wants. For example, one of the satellites named York simply eats and sleeps so Vegapunk and the other five don't ever have to.

There is still lots to learn about Vegapunk as he has just been fully revealed in the most recent chapters of One Piece. And if you're genuinely using this to figure out just who Vegapunk is, go to a damn one piece wiki this is urban dictionary.