Actors in both ER and The Unit
177 actors have appeared in both ER and The Unit, across 400 episodes. The most-credited is Laura Cerón, Nurse Chuny Marquez in ER and Ana Rocha in The Unit.
| Actor | In ER | In The Unit | Eps | Eps |
|---|---|---|---|---|
| Laura Cerón | Nurse Chuny Marquez | Ana Rocha | 219 | 1 |
| William H. Macy | Dr. David Morgenstern | President | 31 | 1 |
| Hank Stratton | Curt Oberg | Isaac Reed | 1 | 7 |
| Yara Martinez | Mia | Annie | 1 | 7 |
| Michael O'Neill | Col. Ken Kilner | Ron Cheals | 1 | 6 |
| April Parker Jones | Joyce | Principal Green | 1 | 2 |
| Conor O'Farrell | Richard Abbott | Major General Heath | 2 | 4 |
| Mike Genovese | Officer Al Grabarsky | Vince | 12 | 1 |
| Ned Bellamy | Detective | Lewis | 2 | 3 |
| Eric Ladin | Pvt. Thomas Perry | Blaylock | 1 | 1 |
| Jarreth Merz | Charles | Momed Salah | 3 | 1 |
| Jayne Taini | Marge Satterfield | Clerk | 1 | 1 |
| Shaun Duke | Detective, Painter | CIA Agent Dan Vorhees | 2 | 4 |
| Kirk B.R. Woller | Prisoner Transport Officer | Detective Penman | 1 | 2 |
| Sarah Avery | Coach Jenny | Samantha | 1 | 2 |
| Stana Katic | Blaire Collins | Special Agent Adrian Lane | 2 | 1 |
| Brent Jennings | Nat | Detective Litsinger | 3 | 1 |
| Bernard White | Addict seeking Rapid Detox | Khan | 1 | 1 |
| David Gianopoulos | John Dean / Bob Halderman | U.N. Chief Security Officer | 1 | 1 |
| David Purdham | Dr. Kallis | Mr. Green | 1 | 1 |
Cast data from TVmaze, licensed CC BY-SA 4.0.