Glenn Howerton

Glenn Howerton Profile Photo

Characters played by Glenn Howerton

Dennis Reynolds — It's Always Sunny in Philadelphia (2005)

Bartender and co-owner of Paddy's Pub. Comes from an upper-class upbringing. Dee's twin brother. Displays the gang's defining traits including narcissism, emotional manipulation, and disregard for social norms. Drives many of the club's convoluted plans.

Jack Griffin — A.P. Bio (2018)

Jack Griffin is a disgraced Harvard philosophy professor who loses his dream job and returns to Toledo, Ohio, to teach advanced placement biology at Whitlock High School. He refuses to teach biology, instead using his honor-roll students to pursue revenge against his rival and later investigate how people find happiness for a book.

Doctor (uncredited) — Crank: High Voltage (2009)

Physician consulting on a medical case.

Hospital Doctor — Crank (2006)

Medical staff treating Chev after his initial poisoning.

Mike — The Strangers (2008)

A local figure in the 2008 film's setting.

Jim — BlackBerry (2023)

Jim is an ambitious businessman who becomes RIM's co-CEO after investing in the company and taking a major stake. He saves payroll by mortgaging his house, drives sales and hiring, pursues ownership of an NHL team, and ultimately exposes RIM to severe legal and strategic risks.

Michael — Must Love Dogs (2005)

Michael is Sarah's brother, whose Newfoundland Sarah is caring for while he experiences marital problems. He becomes drunk and distressed over those problems, and Jake looks after him before taking him home. Michael's crisis indirectly brings Sarah and Jake together and gives Jake an opportunity to help Sarah's family.

The Manager — Archenemy (2020)

The Manager controls the dangerous criminal business that draws Indigo into conflict. The Manager sends Indigo to collect something from Krieg, expects answers about a death and missing money, and threatens the pair indirectly by sending more people after them. This pressure helps force Indigo and Hamster to flee.

Dennis Reynolds — The Nightman Cometh: Live (2009)

Dennis is one of Charlie's friends in the gang and questions Charlie about his reasons for writing the musical. Upset that he has been cast as the Nightman rather than the hero, he nevertheless performs the role; he also co-wrote the finale song, “Dayman,” with Charlie.

Gary — Everything Must Go (2011)

Nick's former supervisor whose tires Nick slashed. He later reveals that the incident causing Nick's firing was likely fabricated, and Nick chooses sobriety by returning Gary's abandoned beer.

Will — Coffee Town (2013)

Website manager for an electronics company who treats Coffee Town as his personal office. When corporate owners plan to renovate the shop, he leads a scheme with his friends to stage a fake robbery to deter them. He also actively courts Becca.

Career Overview

Glenn Howerton has 57 screen credits in a career dating back to 1989. Their work spans 2 cinematic universes — most prominently Crank with 2 titles. Signature works include It's Always Sunny in Philadelphia, A.P. Bio, Velma. Explore the interactive character relationship maps on each title page to trace how their roles connect across franchises.

Personal Facts

Known For
Acting
Gender
male
Known Credits
57
Birth Date
1976-04-13
Birth Place
Okinawa, Japan

Known For

Associated Universes

Universe traveler — spans 2 universes

Frequent Collaborators

Credits

Content sources

Related entry on Wikidata (Q981651), public domain (CC0).