| 角色 | 饰演者 | 角色介绍 |
| Henry Barthes | 阿德里安·布洛迪 | |
| Principal Carol Dearden | 马西娅·盖伊·哈登 | |
| Mr. Charles Seaboldt | 詹姆斯·凯恩 | |
| Ms. Sarah Madison | 克里斯蒂娜·亨德里克斯  | |
| Dr. Doris Parker | 刘玉玲 | |
| Ms. Perkins | 布莱思·丹纳 | |
| Mr. Wiatt | 蒂姆·布雷克·尼尔森 | |
| Mr. Sarge Kepler | 威廉·彼德森 | |
| Mr. Dearden | 布莱恩·科兰斯顿 | |
| Erica | 萨米·盖尔 | |
| Meredith | 贝蒂·凯耶 | |
| Grampa | Louis Zorich | |
| Mr. Mathias | Isiah Whitlock Jr. | |
| Dr. Hart | Chris Papavasiliou | |
| Andy | Kowade Cross | |
| Angry Dad | David Hausen | |
| Angry Mother | Roslyn Ruff | |
| Cafateria Worker | Jerry Walsh | |
| Male Child Services Worker | Johnny C. | |
| Female Child Services Worker | Brenda Pressley | |
| Cindy | Tiffani Holland | |
| David | Lucian Maisel | |
| Dennis | Alex Boniello | |
| Ellen (as Sze Ming Au) | Celia Au | |
| Female Orderly | Mary Joy | |
| Frank | Michael Hammond | |
| Gangsta | Ronen Rubeinstein | |
| George | Al Calderon | |
| Greg Raymond | Brennan Brown | |
| Gretchen from the Free Clinic | Celia Schaefer | |
| Henry's Mother | Reagan Leonard | |
| Jerry | Tarikk Mudu | |
| John in Apartment | Kevin T. Collins | |
| John on Bus | Stephen Payne | |
| Kenny | James Hosey | |
| Kid in Henry's Class | Michael Kaufman | |
| Lupe | Nancy Rodriguez | |
| Male Orderly | Justin Campbell | |
| Marcus | Aaron Sauter |
