Buggy the red nose clown was Mugiwara Kaizoku’s first enemy (Alvida was not the 1st because at that time there was only Luffy). In the battle against Buggy, mugiwara kaizoku had consisted of Luffy, Zoro and Nami (she hadn’t joined yet but she was there)
When Luffy accidentally fell down on a she village, Buggy was having fun in that village. He blew up the village with his Super Special Bomb. He caught Luffy with Nami’s Help. Nami pretended that she had betrayed her captain and wanted to join Buggy Kaizoku. Her real intention was to steal Grand Line Map from Buggy. Nami who actually had good heart couldn’t force herself to kill Luffy even though she hated Pirate. In critical moment, Zoro came to the rescue.
Buggy had eaten the Bara-Bara fruit and it made him able to separate his body part whenever he wanted to. He had a lot of subordinates but his trusty men are Mohji the Lion Tamer, with his lion named Richie, and Cabaji the Acrobat. He ordered them to catch that young trio.
During the fight, Luffy showed his kind heart by helping a dog, Zoro showed his loyalty to his captain and Nami saw how pirate is not always bad and not loyal. Mohji was defeated single handedly by Luffy and Zoro defeated Cabaji. With Nami’s help Luffy defeated Buggy…but it was a funny defeat. Nami tied Buggy’s body parts except his head, hands and feet. Luffy threw Buggy (short Buggy) as far as he could.
This is my dedication for The Best Manga Ever Existed, One Piece by Eiichiro Oda