When Kuzan was introduced in the post timeskip at Chapter 699 of One Piece, many fans were left wondering what his game plan was. Doflamingo himself even posed the question, acknowledging that Kuzan was not just a mere wanderer. Despite popular belief that Kuzan was the secret captain of SWORD and had infiltrated Blackbeard's crew to undermine them from the inside, the latest chapters have made it clear that he is not a member of SWORD and is currently fighting against Garp, which effectively puts the theory of him being a Marine to rest.
However, the question of what Kuzan is working towards still remains. We know that he is currently the Tenth Titanic Captain of the Blackbeard Pirates, but what is motivating him to work with them? The answer may lie in the Ohara incident, which has been referenced multiple times throughout the series. This tragic event has clearly left a lasting impact on Kuzan, and the possibility of another similar incident occurring may push him to take fate into his own hands once again.
Kuzan's character is shaping up to be one of the most interesting in the series, with the potential for complex themes and ideals to be explored through him. Many memorable characters in One Piece are written to be going through circumstances that place them at both ends of the world's spectrum. Take Doflamingo, for example, a former Celestial Dragon who was forced to give up his position and turn to piracy, which was then juxtaposed with his younger brother Rocinante becoming a Marine to stop him.
Kuzan's situation is similar - he was a high-ranking Marine who left due to his refusal to work under an extremist agenda and is now working with an Emperor of the Seas to pursue his own goals. This set-up presents huge potential for his character to explore complex themes such as morality, justice, and loyalty.
Overall, Kuzan's motivations and future role in the series remain a mystery, but the potential for his character to be explored in depth makes him a compelling figure to follow. As the story progresses, it will be interesting to see how Kuzan's past experiences and personal beliefs influence his decisions and actions. One thing is for sure - Kuzan is definitely not just a wanderer, but a man with a purpose, and his journey is sure to be an exciting one.