Big Pan is a character from the anime television special One Piece: Adventure of Nebulandia. He is a member of the Foxy Pirates, the crew led by the cunning Foxy the Silver Fox. Big Pan is notable for being a Wotan, a rare hybrid species born from the union of a fish-man and a giant. This unique lineage makes him an exceptionally large and physically powerful individual, and he serves as a combatant and the largest member of his crew. His immense size and strength are his most defining characteristics, and he is also a part of the Groggy Monsters, which is the Foxy Pirates' team for the Davy Back Fight competitions.

The search results do not provide specific information regarding Big Pan's personality, motivations, character development, or detailed relationships with other characters. His role in the story of Adventure of Nebulandia is as an antagonist and member of the Foxy Pirates, opposing the Straw Hat crew. The special involves the Straw Hats clashing with Foxy once again in the New World, which leads to a confrontation on the island of Nebulandia. No details are available about his interactions with specific Straw Hat members or any changes he undergoes during the special. Similarly, while his physical power as a Wotan is implied, there is no specific information about notable combat techniques, named abilities, or how his Devil Fruit power nullification status is affected by the island of Nebulandia, which is known for its sea water fog that negates Devil Fruit abilities.