Heartstopper breakout Joe Locke is getting cheeky with his Clarkston costar Ruaridh Mollica, following news that Mollica will join the Marvel Cinematic Universe as Tommy Maximoff.In Clarkston, which is currently showing on the West End, Locke and Mollica play a pair of boys in a small American town who fall in love. The play is garnering rave reviews, with many praising the romantic chemistry between its two leads. But now, the two actors may be tasked with portraying a different kind of dynamic: twin brothers.It was announced in February that Mollica would be joining the cast of the upcoming MCU show VisionQuest, which picks up shortly after the ending of WandaVision. The series is set to star Paul Bettany as Vision and James Spader as a human version of the villain Ultron, as well as human versions of AI programs Jarvis, Friday, and Edith. Initially, Mollica was supposed to play a character named Tucker, but it turns out that he'll actually be playing a grown-up version of Vision and Wanda's son Tommy.See on InstagramMarvel released its first trailer for the series at the recent New York Comic Con, revealing that Mollica would be playing an older version of Tommy, also known as the superhero Speed. Tommy first appeared as a child alongside his twin brother Billy in the series WandaVision, which starred Jett Klyne and Julian Hilliard as the siblings.Billy, a.k.a the superhero Wiccan, returned as a teen in the 2024 series Agatha All Along, this time played by Locke. Now, fans will get a chance to see the grown-up version of Tommy as well.@joelocke03Anyway come watch us in clarkston @ruaridhmollica @ClarkstonLocke and Mollica are having fun with the announcement. On TikTok, Locke shared a video of him and his Scottish costar looking awkwardly at each other with the caption, "When you find out the guy you've been kissing at work every day is actually your twin brother"Observant fans noted that Elizabeth Olsen, who played Wanda Maximoff in WandaVision, had once been put in a similar position by the MCU. In 2014, Olsen and actor Aaron Taylor-Johnson starred as husband and wife in the film Godzilla, and were then cast as a pair of siblings the Scarlet Witch and Quicksilver in 2015's Avengers: Age of Ultron.VisionQuest will release on Disney+ in 2026.