All 80 actors in both It's Always Sunny in Philadelphia and The Mentalist
80 actors have appeared in both It's Always Sunny in Philadelphia and The Mentalist, across 338 episodes. The most-credited is Lance Barber, Bill Ponderosa in It's Always Sunny in Philadelphia and Daniel Cardeira in The Mentalist.
| Actor | In It's Always Sunny in Philadelphia | In The Mentalist | Eps | Eps |
|---|---|---|---|---|
| Lance Barber | Bill Ponderosa | Daniel Cardeira | 11 | 1 |
| Travis Schuldt | Ben Smith (The Soldier) | Curtis Whitaker | 7 | 1 |
| Jack Plotnick | Micheal Goldmate | Brett Partridge | 1 | 5 |
| Mary Lynn Rajskub | Gail the Snail | Susie Hamblin | 5 | 1 |
| Atticus Todd | Big Strange Dude | Jon Jon | 2 | 1 |
| Kyle Davis | Lil' Kevin | David Charles | 2 | 1 |
| Alanna Ubach | Roxy | Dr. Gidry | 1 | 1 |
| Cheryl Lynn Bowers | Queen of Thrones | Missy Brammer | 1 | 1 |
| Dean Cameron | Dave Drisko | Doctor | 1 | 1 |
| Fisher Stevens | Lyle Korman | Tolman Bunting | 1 | 1 |
| J.D. Walsh | Doctor | Nate Glass | 1 | 1 |
| Jim O'Heir | Doctor | Mr. Norris | 1 | 1 |
| Kari Coleman | Margie | Patricia | 1 | 1 |
| Lex Medlin | A.D. | Chaplain Johnny Griffin | 1 | 1 |
| Marlon Young | Louis | Burt Hader | 1 | 1 |
| Seth Coltan | Man | Tourist Dad | 1 | 1 |
| Cheryl Texiera | Jane Ponderosa | Shelley Dillion | 2 | 1 |
| Peter MacKenzie | Doctor | Holman Perry | 2 | 1 |
| Sasha Roiz | Adriano Calvanese | Keith Wolcott | 2 | 1 |
| Andrew Leeds | Jason | Drew Yost | 1 | 1 |
| Bill H. McKenzie | Rick | Building Manager | 1 | 1 |
| Bonnie Burroughs | Cop | Jodi Dahl | 1 | 1 |
| Christopher Backus | Bobby | Vincent | 1 | 1 |
| Dan Donohue | Phil | Talk Radio Host | 1 | 1 |
| Geoff Pierson | Warden | Noah Plaskett | 1 | 1 |
| Gerald Downey | Bill Larkin | Forest Ranger | 1 | 1 |
| Jay Jackson | Rick Scheil | News Anchor, Reporter | 1 | 2 |
| Jon Polito | Gino | Bertram Duesterberg | 1 | 1 |
| Jonathan Spencer | Morgue Worker | Howie | 1 | 1 |
| Malcolm Barrett | Terrell | Officer Clarence Price | 1 | 1 |
| Matt Cedeño | Rico | Narcisco Rubrero | 1 | 1 |
| P.J. Byrne | Tad | Kieran Carruthers | 1 | 1 |
| Robert Pine | Jack Mara | Tom Mitchell | 1 | 1 |
| Rosalie Ward | Sally | Jeanette | 1 | 1 |
| Suzy Nakamura | Tabitha | Dr. Fox | 1 | 1 |
| Todd Grinnell | Sage | Jonathan Flint | 1 | 1 |
| Zack Ward | Davy Mara | Whit Naylor | 1 | 1 |
| Christiann Castellanos | Carly | Masseuse | 1 | 1 |
| David Ury | Spa Worker | Col. James Harris | 1 | 1 |
| Elaine Loh | Attorney's Secretary | Devlin | 1 | 1 |
| Jeremy Denzlinger | Police Officer | Deputy | 1 | 1 |
| Jeremy Ratchford | Detective | George Holiday | 1 | 1 |
| Karl T. Wright | Scott | Attorney | 1 | 1 |
| Kristina Apgar | Stephanie | Lindy Hayes | 1 | 1 |
| Mercedes Colon | Council Woman | Caroline Cabrera | 1 | 1 |
| Tom Virtue | Rink Official | George Palmer | 1 | 1 |
| Carter MacIntyre | Male Model, Mike | Bodhi Andros | 2 | 1 |
| Casey Sander | Group Leader | Sheriff Trey Hughes | 1 | 1 |
| David Aranovich | Travis the Ticket Usher | Hughes' Attorney | 1 | 1 |
| Gary Kraus | Dad | Larry Kincaid | 1 | 1 |
| Laura Niemi | Second Executive | Mandy Schultz | 1 | 1 |
| Maria Russell | Police Officer | Medic | 1 | 1 |
| Phil Abrams | Doctor | Greg Humphrey | 1 | 1 |
| Robyn Lively | Kerry | Sadie Harrington | 1 | 1 |
| Stuart McLean | Another Patron | Freddy | 1 | 1 |
| William Duffy | Hedge Fund Guy | TSA Agent #2 | 1 | 1 |
| Dakota Buchanan | Bobby Ponderosa | William Kellogg | 2 | 1 |
| Brad Carter | Carney | Phil Rawson | 1 | 1 |
| Brady Smith | Tony | Rob Wallace | 1 | 1 |
| Erik Jensen | Walter Harris | Bran McTavish | 1 | 1 |
| Ray Porter | Gerry | Wick Ammon | 1 | 1 |
| Sonia Jackson | Crack Whore | Bean | 1 | 1 |
| Tacey Adams | Psych Professor | Lissie Calhoun | 1 | 1 |
| Theo Breaux | Louis Barrett | CDCA Agent #1 | 1 | 1 |
| Wendy Braun | Lauren | Sonya Mitchell | 1 | 1 |
| Biff Wiff | George | Benjamin Ripple | 1 | 1 |
| Joe Thornton, Jr. | Lester Barrett | Corrections Officer | 1 | 1 |
| Luis Fernandez-Gil | Doctor | Ambassador Moreno | 1 | 1 |
| Madison Moellers | Lauren | Ashley Harrington | 1 | 1 |
| Mark Daugherty | Caddy | Horatio | 1 | 1 |
| Pedro Lopez | Dancing Guy | Alfredo | 1 | 1 |
| Treisa Gary | Teacher | Dede Guerra | 1 | 1 |
| Brandon Molale | Big Eric | Mervin | 1 | 1 |
| Kirk Bovill | Colonel Wahington | Driver | 1 | 1 |
| Anise Fuller | Aimee's Mom | Female Student #2 | 1 | 1 |
| Brighid Fleming | Suzie | Lauren Tayback | 1 | 1 |
| Jennifer Ann Massey | Ashley's Mom | Woman at Auction | 1 | 1 |
| Meredith Giangrande | Nancy | Hot Girl | 1 | 1 |
| Harley Graham | Young Dee | Girl #1 | 1 | 1 |
| Lucas Barker | Skinny Kid | Lisbon Kid #1 | 1 | 1 |
← It's Always Sunny in Philadelphia × The Mentalist
Cast data from TVmaze, licensed CC BY-SA 4.0.