The correct spelling of his name is Jinbei. It is a Japanese name and is often written as Jinbei in English translations. **

Yes, Jinbei is a member of the Straw Hat Pirates. He officially joined the crew in the manga chapter 653 and the anime episode 572. Jinbei is a fish-man and a former Warlord of the Sea who has become an important member of the crew, providing support and guidance to the Straw Hats. His loyalty and dedication to the crew make him a valued member of the Straw Hat Pirates. **

Ace and Jinbei are both incredibly strong fighters in their own right. Ace possesses the power of the Mera Mera no Mi, allowing him to control and create fire, while Jinbei is a skilled fishman karate practitioner with immense physical strength and durability. Ultimately, the question of who is stronger between the two would likely depend on the circumstances of their battle and how well they are able to utilize their respective abilities. **

It is difficult to definitively say who is stronger between Ruffy and Jinbei as their strengths and abilities are different. Ruffy possesses immense physical strength, agility, and his Devil Fruit powers make him a formidable fighter. On the other hand, Jinbei is a skilled martial artist and a powerful fish-man with incredible underwater combat abilities. Both characters have proven themselves in various battles and have unique strengths that make them formidable opponents in their own right. **

It is currently unknown when Jinbei will return to the crew in the One Piece series. Jinbei temporarily left the crew to take care of some unfinished business, and his return has been eagerly anticipated by fans. However, the exact timing of his return has not been revealed in the manga or anime. Fans will have to continue following the series to find out when Jinbei will rejoin the crew. **

He goes by Jinbei. **

Jinbei is considered the third strongest Straw Hat after Luffy and Zoro. He is a skilled fishman with immense strength and combat abilities, making him a formidable fighter. Sanji is also a powerful member of the crew, known for his exceptional martial arts skills and agility, but Jinbei's underwater combat prowess and experience give him the edge in being the third strongest member of the Straw Hat crew. **

It is possible that another crew member may join after Jinbei, as the Straw Hat Pirates have historically welcomed new members throughout their journey. However, it ultimately depends on the direction of the story and the author's plans for the crew. Fans are always eager to see new additions to the crew, so it wouldn't be surprising if another member were to join in the future. **