| Person: | Characters | Episodes | |
| • Robert Joy | played | 60 Episodes | |
| • A. J. Buckley | played | 27 Episodes | |
| • Emmanuelle Vaugier | played | 25 Episodes | |
| • Megan Dodds | played | 13 Episodes | |
| • Natalie Martinez | played | 12 Episodes | |
| • Sonya Walger | played | 10 Episodes | |
| • Claire Forlani | played | 10 Episodes | |
| • Kyle Gallner | played | 7 Episodes | |
| • Mykelti Williamson | played | 7 Episodes | |
| • Carmen Argenziano | played | 6 Episodes | |
| • J. Grant Albrecht (1) | played | 6 Episodes | |
| • Chad Lindberg | played | 5 Episodes | |
| • Walker Haynes | played | 5 Episodes | |
| • Nelly | played | 4 Episodes | |
| • Kelly Hu | played | 4 Episodes | |
| • Ron Yuan | played | 4 Episodes | |
| • Kerr Smith | played | 4 Episodes | |
| • Kathleen Munroe | played | 4 Episodes | |
| • Bess Wohl | played | 4 Episodes | |
| • Ed Quinn | played | 4 Episodes | |
| • Edward Furlong | played | 4 Episodes | |
| • Jacqueline PiƱol | played | 4 Episodes | |
| • Jonah Lotan | played | 4 Episodes | |
| • Sydney Park | played | 4 Episodes | |
| • Kanin J. Howell | played | 4 Episodes | |
| • Paul Papadakis | played | 4 Episodes | |
| • Jessalyn Gilsig | played | 3 Episodes | |
| • Tony Amendola | played | 3 Episodes | |
| • Josie Davis | played | 3 Episodes | |
| • Joey Lawrence | played | 3 Episodes | |
| • Denice J. Sealy | played | 3 Episodes | |
| • Madchen Amick | played | 3 Episodes | |
| • Craig T. Nelson | played | 3 Episodes | |
| • John Larroquette | played | 3 Episodes | |
| • Skeet Ulrich | played | 3 Episodes | |
| • David Julian Hirsh | played | 3 Episodes | |
| • Sarah Carter | played | 3 Episodes | |
| • Jason Wiles | played | 3 Episodes | |
| • Beau Garrett | played | 3 Episodes | |
| • Julia Ormond | played | 3 Episodes | |
| • Casey LaBow | played | 3 Episodes | |
| • Chris Payne Gilbert (1) | played | 2 Episodes | |
| • Michael DeLuise | played | 2 Episodes | |
| • Kristen Dalton | played | 2 Episodes | |
| • Raphael Sbarge | played | 2 Episodes | |
| • Kam Heskin | played | 2 Episodes | |
| • Carol Kiernan | played | 2 Episodes | |
| • Clifton Collins, Jr. | played | 2 Episodes | |
| • Dayo Ade | played | 2 Episodes | |
| • Jeffrey R. Nordling | played | 2 Episodes | |
| • Adoni Maropis | played | 2 Episodes | |
| • Chad Williams | played | 2 Episodes | |
| • Shawn Christian | played | 2 Episodes | |
| • David James Elliott | played | 2 Episodes | |
| • Jack McGee (1) | played | 2 Episodes | |
| • Ethan Erickson | played | 2 Episodes | |
| • Michael McLafferty | played | 2 Episodes | |
| • Stacy Edwards | played | 2 Episodes | |
| • Jaime Ray Newman | played | 2 Episodes | |
| • Paul Carafotes | played | 2 Episodes | |
| • Nick Damici (1) | played | 2 Episodes | |
| • Tim Guinee | played | 2 Episodes | |
| • Terry Kinney | played | 2 Episodes | |
| • Craig Baxley, Jr. (2) | played | 2 Episodes | |
| • Michael Irby | played | 2 Episodes | |
| • Joe Morton | played | 2 Episodes | |
| • Moe Irvin | played | 2 Episodes | |
| • Al Santos | played | 2 Episodes | |
| • Anna Belknap | played | 2 Episodes | |
| • Rob Morrow | played | 2 Episodes | |
| • Elias Koteas | played | 2 Episodes | |
| • Thad Luckinbill | played | 2 Episodes | |
| • Todd Cahoon | played | 2 Episodes | |
| • Leith M. Burke | played | 2 Episodes | |
| • Natalina Maggio | played | 2 Episodes | |
| • Alanna Ubach | played | 2 Episodes | |
| • David Rodwell | played | 2 Episodes | |
| • John Dove | played | 2 Episodes | |
| • Austin Priester | played | 2 Episodes | |
| • Gina St. John | played | 2 Episodes | |
| • Paul James (1) | played | 2 Episodes | |
| • Peter Fonda | played | 2 Episodes | |
| • Heather Mazur | played | 2 Episodes | |
| • Kevin Derr | played | 2 Episodes | |
| • Brian Oblak | played | 2 Episodes | |
| • Anthony Molinari | played | 2 Episodes | |
| • Matt McTighe | played | 2 Episodes | |
| • Brenna Radding | played | 2 Episodes | |
| • Bryan Becker | played | 2 Episodes | |
| • Deja Howell | played | 2 Episodes | |
| • Ryan Happy | played | 2 Episodes | |
| • Alex Madison | played | 2 Episodes | |
| • Cody Longo | played | 2 Episodes | |
| • Lesley-Ann Brandt | played | 2 Episodes | |
| • Jeananne Goossen | played | 2 Episodes | |
| • Jenn Proske | played | 2 Episodes | |
| • Michael King | played | 2 Episodes |