The group was founded in Southern Island, as a youth association in center of the island, Windmill Village. Many of the group members scattered all over the world.
Sonic Rush Adventure
In Sonic Rush Adventure, Sonic, Blaze, Tails and Marine gathered all the members of the association. The koalas helped the heroes during their adventure, reporting on the location of several interesting places that were worth exploring. At the end of their adventure, most of the group members join Blaze to say goodbye to Sonic and Tails as they prepared to return to their home dimension.
The precise membership of the Coconut Crew is unclear. Only Tabby and Colonel are confirmed members, while the rest of the members has only been implied.[note 1] It is also not stated whether or not Marine herself is a member of the Coconut Crew.
↑ 1.01.11.21.31.4Setter said near the end of Sonic Rush Adventure that "Now that all the members of the Coconut Crew are back, the village is nice and lively again." At that point, Daikun, Colonel, Kylok, Muzy, Setter and Tabby are all present at the island. Excluding Marine, everyone else on the island (namely Sonic, Blaze, Tails, Norman and Gardon) is a foreigner, meaning that Setter most likely referred to the previously-mentioned group of koalas as the Coconut Crew.