General & Others Past antagonists you can convincingly see teaming up with Luffy in the future.

[Pan D. A. Man]

Why do I feel we going to see Enel again? Idk why, but I feel he can't be just one-time for an arc and feel he could get involve in future arc probably with World Government side if I am being honest.

 

[The White Crane]

A past villain that has yet to team up with Luffy that you could realistically see teaming up with him at some point.

Katakuri seems to be a safe bet.