If you’ve never seen the cast of “The Big Bang Theory” now, you’re in for a treat.

Riki Lindhome as Ramona Nowitzki

Played by Riki Lindhome, Ramona Nowitzki initially appeared in Season 2 as a CalTech graduate student with affections for Sheldon. Her adoration for him soon turned stalkerish and grated on Sheldon’s nerves. The last time Sheldon saw Ramona, her residual obsessive tendencies pushed him to propose to Amy.

Riki Lindhome As Ramona Nowitzki

Alessandra Torresani As Claire

Claire, a writer for a children’s science fiction series, was played by Alessandra Torresani in the film. During Season 9, she met Raj and Howard in a comic book store and quickly became embroiled in a love triangle between Raj and Emily, which she eventually resolved. At the end of the day, Raj sought to date them both, but his plan backfired spectacularly.

Alessandra Torresani As Claire