
Acting
David Alan Hornsby (born December 1, 1975) is an American actor, screenwriter, and producer. He is best known for a recurring role as defrocked priest Matthew "Rickety Cricket" Mara on the FX comedy series It's Always Sunny in Philadelphia, for which he also writes and co-produces. Hornsby also had a regular role on the NBC comedy-crime series Good Girls (2018–2020). He is also the voice of Fanboy in the Nickelodeon animated TV series Fanboy & Chum Chum.

Merry Little Batman
as The Joker / Fireman (voice)

Fool's Paradise
as Pilot

Earmouse and Bottle
as Earmouse

Pretty Bird
as Kenny Owenby

Fanboy
as Fanboy (voice)

Aliens vs Predator: Requiem
as Drew

Flags of Our Fathers
as Louis Lowery

Christmas with the Kranks
as Randy Becker
Straight Eye: The Movie
as Daryl

Minority Report
as Pre-Crime Public Service Announcer

St. Denis Medical
as Harry · 1 ep.

Battle Kitty
as Mole Monster (voice) · 9 ep.

Mythic Quest
as David Brittlesbee · 40 ep.

Good Girls
as Leslie 'Boomer' Peterson · 15 ep.

Baskets
as Pastor · 2 ep.

We Bare Bears
as Harry / Additional Voices (voice) · 1 ep.

The Goldbergs
as Kyle · 1 ep.

Hello Ladies
as Andy · 2 ep.

Unsupervised
as Joel (voice) · 13 ep.

New Girl
as Ed Warner · 1 ep.
Flags of Our Fathers
2006