Season 8, ep. 11, "Dial Meg for Murder"
Franky officially joins the Straw Hat Pirates in Episode 329 of the anime series One Piece. After the events at Enies Lobby, Franky decides to join the crew as their shipwright. His recruitment is a significant moment in the series as he brings his shipbuilding skills and strength to the crew.
In the first episode of season three (3x01 - The Purple Piano Project).
Season 4, Cartman Joins NAMBLA
Jess joins Gilmore Girls in the second season episode "Nick & Nora/Sid & Nancy."
Yes, she joins the team in the 25th episode "Usual Suspects".
Stewie referred to the "Man in White" as the doctor who was present at his birth.Later in the episode after Meg joins the cult the cult leader is dressed in all white robes. He comes to the Griffin's house after Peter brings Meg back home and Stewie sees this as the man in white and he incinerates him with a laser gun.
Wrong show, Francine joins the Ladybugs on "American Dad"
Yuki has a flashback about Zero joining their family in the second episode of Vampire Knight. In that episode, Yuki remembers how Zero was taken in by her father and brought to live with them after losing his family to a vampire attack.
233 and joins the crew in episode 322 after Robin forces him to by grabbing his nuts
Peter Loves Mary - 1960 Peter Joins a Committee - 1.8 was released on: USA: 30 November 1960
In the Season 2 episode "The Story on Page One," Meg joins several clubs and even tries cheerleading before joining the school newspaper.
Peter Loves Mary - 1960 Peter Joins a Committee 1-8 was released on: USA: 30 November 1960
Sai joins team 7 in Naruto shippunden episode 34
Sasuke joins Orochimaru in the end of episode 109 but everyone(except Sakura) finds out in episode 110
I can't think of one where she turns lesbian, but in the episode 'Brian Sings and Swings' (UK Season 5/US Season 4), she joins a lesbian club at school because she wants to fit in and changes her image to the stereotypical lesbian. Hope this helps! :/
Franky officially joins the Straw Hat Pirates in Episode 329 of the anime series One Piece. After the events at Enies Lobby, Franky decides to join the crew as their shipwright. His recruitment is a significant moment in the series as he brings his shipbuilding skills and strength to the crew.
In the first episode of season three (3x01 - The Purple Piano Project).