Robert Michael Ryan (born February 20, 1978) is an American actor, producer, writer and director. His acting career spans a number of direct-to-video features and guest roles on a variety of popular TV series, perhaps most notably as Marvin Jr., brother of Jason Segel's Marshall Eriksen, on CBS' How I Met Your Mother (2005–12). As a filmmaker, Ryan produced, wrote and directed Dark Revelations (2015), Ouija Witch (2023), Popeye the Slayer Man (2025) and its upcoming sequel.
Sleepwalker
(The Unknown)
Get the Girl
(Freddy)
Decay
Necrosis
(Michael)
Dolls
(Orderly)
Things II
(Cop)
Haunted
(Officer Bob)
Dark Revelations
(Cody)
Bloodstream
(Frank)
How I Met Your Mother
(Marvin Eriksen)
Miss Match
(Tall Guy)
V.I.P.
(Wilgan's Bodyguard (uncredited))
Early Edition
Hang Time
(Earl Hatfield)
In Justice
Necrosis
(Writer)
Necrosis
(Executive Producer)
Get the Girl
(Writer)
Ouija Witch
(Director)
Ouija Witch
(Writer)
Ouija Witch
(Visual Effects)
Ouija Witch
(Executive Producer)
Dark Revelations
(Director)
12 to Midnight
(Executive Producer)
Dolls
(Producer)
Popeye the Slayer Man
(Director)
Popeye the Slayer Man
(Executive Producer)
Dark Revelations
(Writer)
Popeye the Slayer Man
(Story)
Popeye the Slayer Man 2
(Director)
Popeye the Slayer Man 2
(Story)
Popeye the Slayer Man 2
(Producer)