| Malcolm (135?episodes 2000-2006) | 弗朗基·穆尼兹
 | |
| Lois (134?episodes 2000-2006) | 简·卡兹玛拉克
 | |
| Hal (136?episodes 2000-2006) | 布莱恩·科兰斯顿
 | |
| Francis (118?episodes 2000-2006) | 克里斯托弗·马斯特森
 | |
| Reese?/ ... (136?episodes 2000-2006) | 贾斯汀·贝菲尔德
 | |
| Dewey (136?episodes 2000-2006) | Erik Per Sullivan | |
| Caroline Miller?/ ... (7?episodes 2000) | Catherine Lloyd Burns | |
| Stevie Kenarban?/ ... (53?episodes 2000-2006) | 克雷格·拉马尔·特雷勒
 | |
| Craig Feldspar (35?episodes 2000-2005) | David Anthony Higgins | |
| Piama Tananahaakna?/ ... (29?episodes 2002-2006) | Emy Coligado | |
| Otto Mannkusser?/ ... (27?episodes 2002-2004) | Kenneth Mars | |
| Cadet Eric Hansen?/ ... (27?episodes 2000-2002) | Eric Nenninger | |
| Lloyd (25?episodes 2000-2003) | Evan Matthew Cohen | |
| Dabney Hooper?/ ... (24?episodes 2000-2003) | Kyle Sullivan | |
| Abraham 'Abe' Kenarban?/ ... (18?episodes 2000-2006) | Gary Anthony Williams | |
| Flora Mayesh?/ ... (15?episodes 2000-2003) | Kristin Quick | |
| Commandant Edwin Spangler (15?episodes 2000-2002) | Daniel von Bargen
 | |
| Cadet Joe (12?episodes 2000-2001) | Kasan Butcher | |
