| 角色 | 饰演者 | 角色介绍 |
| Richard 'Richie/Trashmouth' Tozier | Harry Anderson | |
| Eddie Kaspbrak | 丹尼斯·克里斯托弗 | |
| Stanley 'Stan' Uris | Richard Masur | |
| Beverly 'Bev/Bevvie' Marsh | 安妮特·奥图 | |
| Michael 'Mike/Mikey' Hanlon | Tim Reid | |
| Ben 'Haystack' Hanscom | 约翰·雷特尔 | |
| William 'Stuttering Bill' Denbrough | 理查德·托马斯 | |
| Robert 'Bob' Gray/Pennywise the Dancing Clown/It | 蒂姆·克里 | |
| William 'Stuttering Bill' Denbrough (age 12) | 乔纳森·布兰戴斯 | |
| Ben 'Haystack' Hanscom (age 12) | Brandon Crane | |
| Eddie Kaspbrak (age 12) | Adam Faraizl | |
| Richard 'Richie' Tozier (age 12) | 赛斯·格林 | |
| Stanley 'Stan' Uris (age 12) | Ben Heller | |
| Beverly 'Bev/Bevvie' Marsh (age 12) | Emily Perkins | |
| Michael 'Mike/Mikey' Hanlon (age 12) | Marlon Taylor | |
| Audra Phillips Denbrough | 奥丽维娅·赫西 | |
| Henry Bowers | Michael Cole | |
| Mrs. Sonya Kaspbrak | Sheila Moore | |
| Henry Bowers (age 14) | Jarred Blancard | |
| Mrs. Gray Kersh | Florence Patterson | |
| Taxi Driver | Jay Brazeau | |
| Reginald 'Belch' Huggins | Drum Garrett | |
| Patrick Hocksetter | Gabe Khouth | |
| Thomas 'Tom' Rogan | Ryan Michael | |
| Nat | Charles Siegel | |
| Cyndi | Venus Terzo | |
| Alvin Marsh | Frank C. Turner |
