
One of those lucky few is famous comedian and silent-performer, Teller of the magic duo Penn and Teller. In the main series, Teller takes on the role of Amy’s father, Larry Fowler, along with acting icon Kathy Bates as her mother. The two make for a hilarious pair as Sheldon tries to bond with them both on the show, but there’s one problem with it: Teller also plays a completely different character on the prequel offshoot, Young Sheldon. In the past, showrunners have notoriously played around with the franchise’s canon as more and more spin-offs are in development, but do Teller’s separate guest roles actually make sense within it?
Magician Teller and ‘The Big Bang Theory’
Fowler comes into the story near the show’s finale, right before Sheldon and Amy tie the knot. Sheldon, who’s desperately trying to bond with his soon-to-be father-in-law, gets frustrated when Fowler becomes obsessed with Howard’s magic tricks. Considering Howard only performs some beginner stunts, like making a whistle “disappear” and the classic separating-rings trick, Fowler’s enchantment with it all is hilariously ironic given his lifelong profession. Although audiences would need to recognize Teller in order to understand this underlying gag, Teller’s abundant comedy prowess still made for a hilarious addition to the show’s goofy cast of characters.
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Penn & Teller Both Appear in ‘Young Sheldon’

Following Teller’s cameo in the original series of The Big Bang Theory franchise, both he and his showbiz partner Penn guest starred in the spin-off prequel, Young Sheldon. Despite Teller’s previous part as Larry Fowler, his return wasn’t a role reprisal.
The wild idea came from showrunner and co-creator Steve Molaro. Despite Teller’s previous work on the franchise, it was Penn who was his first zit pick. However, while talking with Cinemablend, Molaro explained how he eventually cast the pair together: “When we landed on Penn, he seemed so perfect [for Acne], and it’s hard not to think of Teller when you think of Penn. Once Penn agreed to do it, we circled around to say, ‘How would you guys feel about doing it together, as Acne and Pus?'” Luckily, in the end, the magic duo were really into it, and their antics made for a hilariously memorable episode.
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Does Teller’s Double Role Make Sense?
Overall, showrunners have no problem playing around with the Big Bang Theory canon, seeing double-dipping in the cast as no big deal. In fact, actor Melissa Tang (Beginners) has been cast in three different roles across the expanding franchise as Mandy Chow in Big Bang Theory, Ms. Fenley in Young Sheldon, and Jackie in Georgie and Mandy’s First Marriage. So, as the sitcom saga continues, we may just see Teller return to portray another character before all is said and done.