FlickList
O'Neill Monahan

O'Neill Monahan

Actor 2009–2025 (16 year career)
6.5 avg rating

Highest Rated

Summer Camp Island

Summer Camp Island

2018 · as Additional Voices (voice)

7.8
The Middle

The Middle

2009 · as Lucas

7.6
Monster: The Ed Gein Story

Monster: The Ed Gein Story

2025 · as Cousin Geoff

7.2

Known For

Killer Grandma
Film

Killer Grandma

Young Tom
Let Us In
Film

Let Us In

Christopher
The Middle
Film

The Middle

Lucas
Monster: The Ed Gein Story
Film

Monster: The Ed Gein Story

Cousin Geoff
The Santa Clauses
Film

The Santa Clauses

Teen
Summer Camp Island
Film

Summer Camp Island

Additional Voices (voice)
The Odd Couple
Film

The Odd Couple

Noah
Teachers
Film

Teachers

Ron

Filmography