All 68 actors in both Arrested Development and ER
68 actors have appeared in both Arrested Development and ER, across 415 episodes. The most-credited is Mae Whitman, Ann Veal in Arrested Development and Heather in ER.
| Actor | In Arrested Development | In ER | Eps | Eps |
|---|---|---|---|---|
| Mae Whitman | Ann Veal | Heather | 17 | 1 |
| Busy Philipps | Joan | Dr. Hope Bobeck | 1 | 14 |
| Judy Greer | Kitty Sanchez | Tildie Mulligan | 13 | 1 |
| Carl Weathers | Carl Weathers | Louie Taylor | 4 | 1 |
| Frances Conroy | Lottie Dottie DA | Becky Riley | 5 | 2 |
| Debra Mooney | Joan "Ma" Bark | Leila Morgan, Barbara Feingold | 5 | 3 |
| Iqbal Theba | Nazhgalia | Dr. Zogoiby | 1 | 4 |
| J.K. Simmons | General Anderson | Gus Loomer | 1 | 1 |
| Kenneth Kimmins | Doctor Carr | Mr. Spevacek | 1 | 1 |
| Lauren Bowles | Stripper | Hannah | 1 | 1 |
| Lillian Hurst | Luz | Mrs. Landeta | 1 | 1 |
| Rocky McMurray | Warden James Buck | Sergeant Myers | 2 | 1 |
| Don Perry | Earl Milford | Dr. Stan Breedlove | 1 | 2 |
| Anthony De Longis | Mr. F #2 | ENT | 3 | 1 |
| George Cheung | Asian Man | Mr. Chen, Mr. Fong | 1 | 4 |
| Anthony DeSantis | James Alan Spangler | Stanley | 1 | 1 |
| Bart Tangredi | Coach Jerry | Male Patron | 1 | 1 |
| Bob Glouberman | David the Aide, Doctor #2 | Jeff | 4 | 1 |
| Bruno Alexander | Bailiff | Berman | 1 | 1 |
| Chad Einbinder | Birthday Party Man | Gordan | 1 | 1 |
| Michael Blieden | Agent Cummings | Paul's Brother | 2 | 1 |
| John F. Schaffer | Cop #2 | Drooling Patient | 2 | 1 |
| Don Took | Cab Driver | Vinnie Rosato | 1 | 1 |
| Gary Kraus | Reunion Dad | CJ | 1 | 1 |
| Lobo Sebastian | Eblin | Freddy Harrison | 1 | 1 |
| Cici Lau | Bev | Mrs. An | 2 | 1 |
| Alessandra Torresani | Ann Veal | Kate Preston | 1 | 1 |
| Emerson Brooks | Douglas | Gonzalez | 2 | 1 |
| Michael P. Byrne | Bailiff | Bulowski | 1 | 1 |
| Myra Turley | Neighbor | Monica Ford | 1 | 1 |
| Ping Wu | Proctor | Mr. Cheung | 1 | 1 |
| Scott Atkinson | Roger Danish | Blake | 1 | 1 |
| Allan Wasserman | Herb Zuckerkorn | Mr. Goldstein | 2 | 1 |
| Tony Hale | Byron "Buster" Bluth | Norman Chapman | 1 | 2 |
| Asante Jones | Army Sergeant | Workman #1 | 1 | 1 |
| Greg Wrangler | Wrangler Jeff | Construction Worker | 1 | 1 |
| Harry S. Murphy | Brian Snee | Dr. Hamill | 1 | 1 |
| Steve Stapenhorst | Judge | Thorn | 1 | 1 |
| Tracy Howe | Sheriff | Gary | 1 | 1 |
| Anne Bellamy | Woman at Country Club | Dottie | 1 | 1 |
| Christopher T. Wood | Surgeon | Dr. Higgins | 1 | 1 |
| Pat Crawford Brown | Old Woman | Mrs. Votey | 1 | 1 |
| Rance Howard | Rance Howard | Dr. Oliver Kostin | 1 | 1 |
| Steve Tom | Board Member | MacPherson | 1 | 1 |
| Verda Bridges | Woman | May Crawford | 1 | 1 |
| Victor Campos | Lupe's Uncle | Jeremy Barnes, Patient | 1 | 2 |
| Curtis Blanck | Young G.O.B. | Murray | 1 | 1 |
| Jon Curry | American MP | Karl | 1 | 1 |
| Sammy Fine | Boy Sailor | Dermott | 1 | 1 |
| Tom Virtue | Kell | Pares | 1 | 1 |
| Toshi Toda | Japanese Businessman #1 | Japanese Businessman 1 | 1 | 1 |
| Connor Matheus | Boy #1 | Ian Parker | 1 | 1 |
| Lee Ryan | Waiter | Ortho #2 | 1 | 1 |
| Rick Hall | Photographer | Detective in Larkin Case | 1 | 1 |
| Steve Seagren | Car Salesman | Zimmer | 1 | 1 |
| Parvesh Cheena | Kabir, Taxi Driver | Dr. Agbo | 2 | 1 |
| Alejandro Patiño | Mexican Man #1 | Best Man | 1 | 1 |
| Gerry Del Sol | Waiter | Security Officer | 1 | 1 |
| Joe Camareno | Rolando | Manuel | 1 | 1 |
| Larry Udy | Man | Evidence Tech | 1 | 1 |
| Andy Dick | Andy Dick | Tommy Brewer | 1 | 1 |
| Monnae Michaell | Shara Winfield | Mrs. Bell | 2 | 1 |
| Armando Molina | Ice Cream Vendor | Sgt. Pete Jackson | 1 | 1 |
| Jillian Armenante | Armstrong | Tamara Gordon | 1 | 1 |
| Ross Mackenzie | Limo Driver | Fred | 1 | 1 |
| Eddie Pepitone | Govennah | Dying Patient | 1 | 1 |
| Alan Blumenfeld | Floyd the Barber | Rob Savage | 1 | 1 |
| Rudy Moreno | Mario | Sal Ramirez | 1 | 1 |
Cast data from TVmaze, licensed CC BY-SA 4.0.