Dennis and Dee decide to teach Frank a lesson "A Christmas Carol"-style, and Mac and Charlie learn some shocking things about their childhood Christmas traditions.
Unfortunately the movie A Very Sunny Christmas is not yet available on HBO Max.
| Writing | Rob McElhenney | Writer |
| Directing | Fred Savage | Director |
| Writing | Charlie Day | Writer |
| Production | Jeff Luini | Co-Producer |
| Costume & Make-Up | Connie Kallos | Key Hair Stylist |
| Production | Charlie Day | Executive Producer |
| Production | Thomas Lofaro | Executive Producer |
| Art | Scott Cobb | Production Design |
| Costume & Make-Up | Leah Vautrot | Makeup Department Head |
| Production | Scott Marder | Co-Executive Producer |
| Sound | Cormac Bluestone | Music |
| Production | Michael Rothenberg | Executive Producer |
| Costume & Make-Up | Suzanne Kontonickas | Hair Department Head |
| Art | Patrick Lees | Leadman |
| Production | David Hornsby | Co-Executive Producer |
| Production | Matt Shakman | Supervising Producer |
| Editing | Patrick Walsh | Editor |
| Art | Jon Chaifetz | Set Decoration |
| Costume & Make-Up | Darcy Gilmore | Key Makeup Artist |
| Art | Chris Buchinsky | Storyboard Artist |
| Production | Wendy O'Brien | Casting |
| Sound | Valeria Ghiran | Boom Operator |
| Production | Rob McElhenney | Executive Producer |
| Production | Rob Rosell | Co-Executive Producer |
| Production | Fred Savage | Producer |
| Camera | Peter Smokler | Director of Photography |
| Editing | Lee Sung-jin | Editor |
| Production | Randall Einhorn | Producer |
| Production | Glenn Howerton | Executive Producer |
| Costume & Make-Up | Autumn Butler | Key Makeup Artist |
| Production | Nick Frenkel | Executive Producer |
| Production | Rob McElhenney | Producer |
| Art | David Utley | Art Direction |
| Costume & Make-Up | Sabrina Rosen | Costume Design |
| Editing | Tim Roche | Editor |
| Sound | Brian Jordan | Boom Operator |
| Camera | Jason Gary | Best Boy Grip |
| Costume & Make-Up | Reese Spensley | Ager/Dyer |
| Art | Monica Sotto | Art Department Coordinator |
| Crew | Mike Terrigno | Compositor |
| Costume & Make-Up | Michael Crow | Costumer |
| Production | Amy Mayfield | Production Supervisor |
| Art | Casey Shaw | Assistant Property Master |
| Visual Effects | Charles Greenfield | Character Designer |
| Art | Bruce C. Knight II | Property Master |
| Visual Effects | Stephen Fleet | Visual Effects |
| Lighting | Coby Nissen | Lighting Technician |
| Camera | Mande Whitaker | Camera Operator |
| Sound | Chris Kellett | Sound Mixer |
| Camera | Angelica Giangregorio | First Assistant Camera |
| Production | Chris Gehrt | Casting Assistant |
| Costume & Make-Up | Ashley Shartle | Set Costumer |
| Sound | Mike Marchain | Supervising Sound Editor |
| Crew | Dailyn Matthews | Stunts |
| Crew | Michael Munoz | Stunt Double |
| Crew | John Ross | Stunts |
| Camera | David Gasperik | Camera Operator |
| Directing | Richard Gonzales | Second Second Assistant Director |
| Art | Chikako Suzuki | Assistant Art Director |
| Camera | James Pat Whelan | Grip |
| Directing | Michael Risoli | First Assistant Director |
| Costume & Make-Up | Traci Asher | Costumer |
| Crew | Marc Scizak | Stunt Coordinator |
| Lighting | Giovanni Zelko | Assistant Chief Lighting Technician |
| Camera | Rory Hanrahan | Assistant Camera |
| Costume & Make-Up | Shawn Barry | Costume Supervisor |
| Art | David Utley | Assistant Art Director |
| Sound | Shawn Kennelly | Foley Mixer |
| Camera | Adam Richard Sklena | Camera Operator |
| Art | Reese Spensley | Additional Set Dresser |
| Art | Scott Schutzki | Set Dresser |
| Sound | Charlie Kolander | Dialogue Editor |
| Sound | Mark T. Williams | Sound Re-Recording Mixer |
| Costume & Make-Up | Jennie Compton | Costumer |
| Directing | Maximillian D. Day | First Assistant Director |
| Directing | Carla Rose Ponzio | Second Assistant Director |
| Art | Aiyana Trotter | Set Decoration |
| Sound | George Flores | Production Sound Mixer |
| Sound | Andrew Morgado | Foley Mixer |
| Camera | Tyler Williams | Assistant Camera |
| Visual Effects | Charles Greenfield | Animation |
| Sound | Heinz Kiessling | Music |
| Production | Marlena Schaefer | Location Assistant |
| Sound | Steve Griffen | Music Supervisor |
| Editing | Ken Van Deest | Colorist |
| Crew | Beverly Parkinson | Post Production Assistant |
| Production | Julio Salazar | Production Driver |
| Production | Jesse Lorber | Assistant Location Manager |
| Editing | Matthew Crocker | Assistant Editor |
| Directing | Jeff Gonzalez | Script Supervisor |
| Editing | Bryan Petty | Assistant Editor |
| Production | Bryan Glinsky | Assistant Location Manager |
| Production | John Brown | Assistant Location Manager |
| Visual Effects | Daniel Palmer | Animation |
| Production | Sean Palsgaard | Post Production Coordinator |
| Crew | Robert E. Dingle | Transportation Coordinator |
| Production | Dale Dreher | Location Manager |
