Joe Locke plays as Charlie Spring in Heartstopper.
Joe Locke is the top #1 member of the cast and appears in 8 episodes.

Kit Connor is a British actor who started when he was 8. His first film role was the lead of Tom in Get Santa in 2014. Other roles include Eli Ramsey in The Guernsey Literary and Potato Peel Pie Society, Simon Crowhurst in The Mercy & Wootton in Slaughterhouse Rulez. Most recently he plays Joe in Little Joe and Older Reggie in Rocketman. His TV work includes playing Archie Beckles in Rocket's Island, Joey in The Frankenstein Chronicles, young Petya Rostov in War & Peace, Jack in Grandpa's Great Escape and Pantalaimon in His Dark Materials. His theatre work includes the role of Small Boy in Welcome Home, Captain Fox! at the Donmar Warehouse and the role of Alexander in Fanny & Alexander at The Old Vic.

Kit Connor plays as Nick Nelson in Heartstopper.
Kit Connor is the top #2 member of the cast and appears in 8 episodes.

William Gao Hardy (高鑫) is a British actor, singer, and model. He plays Tao Xu in the Netflix adaptation of Heartstopper.

William Gao plays as Tao Xu in Heartstopper.
William Gao is the top #3 member of the cast and appears in 8 episodes.

Yasmin Finney is an English actress and Internet personality. She appeared on GLAAD's second annual 20 Under 20 list. She is known for her role in the Netflix series Heartstopper as Elle Argent. In May 2022, it was announced she would join the cast of Doctor Who in 2023.

Yasmin Finney plays as Elle Argent in Heartstopper.
Yasmin Finney is the top #4 member of the cast and appears in 8 episodes.