
Mark Donald Steger (born January 16, 1962) is an American actor, performance artist, and choreographer. He is known for Stranger Things (2016), Scary Stories to Tell in the Dark (2019) and The Pact (2012).

The Mortuary Assistant
2026 · as The Mimic

I Am Legend
2007 · as Infected

Frankenstein
2025 · as Spinal Corpse

Men in Black II
2002 · as Quadraped Alien (uncredited)

The Nun
2018 · as Duke

The Last Witch Hunter
2015 · as Witch Attacker #2

Rebel Moon - Part One: A Child of Fire
2023 · as Lift Operator

Scary Stories to Tell in the Dark
2019 · as Harold the Scarecrow / Pale Lady

The Man from Elysian Fields
2001 · as Performance Artist

Paranormal Activity: The Ghost Dimension
2015 · as Tobi

The Pact
2012 · as Charles

Velvet Buzzsaw
2019 · as Hoboman

Black Friday
2021 · as Monster Angry Gran

Incarnate
2016 · as Maggie (Demon)/Luka

Holidays
2016 · as Bunny Man (segment "Easter")

The Curse of Bridge Hollow
2022 · as Pharaoh Mummy

Imago
2026 · as Companion/Man

Mr. Jones
2013 · as Mr. Jones