Marcus Rosner

Marcus Rosner is a Canadian actor. He has appeared in a wide variety of television and film projects since 2012. Some of his more notable roles include appearances in the TV shows Unreal, Arrow, Supernatural, and Once Upon a Time.

WIKIPEDIA

ONCE UPON A TIME · S4, E3

Rocky Road

When an icy spell is cast on Marian, which will ultimately freeze her heart and kill her, the Storybrooke residents place the blame on Elsa. Plus, Regina teams up with Henry to try and discover who the author of the fairy tale book is. Meanwhile, in Arendelle of the past, Elsa and Kristoff set off to stop Hans from attempting to take control of the kingdom.
ONCE UPON A TIME · S4, E10

Fall

As the Spell of Shattered Sight approaches Storybrooke, Mary Margaret and David rally the residents to prepare for the curse while Belle and the fairies work together on an antidote. Gold, with Hook as his reluctant servant, sets about an exit strategy of his own. Regina and Robin Hood ready themselves for the worst while, with the help of a locator spell, Emma and Elsa search desperately for Anna. In Arendelle, Anna and Kristoff awaken to find that their kingdom is once again in danger.
MISTRESSES · S3, E6

Love Is an Open Door

Karen grapples with her feelings as she, Alec and Vivian decide exactly how their relationship is going to work. A bad judgment call involving the kids puts Marc in the doghouse with April, driving her closer to Blair. Joss and Harry rebound from their painful break-up in different ways while Calista enacts revenge on a manipulative Luca.
ARROW · S1, E3

Lone Gunmen

Oliver is surprised when someone shoots and kills one of his targets. As his plan is to bring people to justice vs. outright killing them Oliver doesn't appreciate the help and searches for the gunman. He soon learns that the man Deadshot (guest star MICHAEL ROWE) is taking out businessmen who are scheduled to bid at an auction on an energy company and Walter is one of the bidders. Realizing he can't protect his family and stop Deadshot at the same time Oliver enlists Detective Lance's help but his plan has dire consequences. Meanwhile Laurel and Tommy get caught in an awkward situation with Oliver.