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.

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.
Once Upon a Time · S4, E3

Rocky Road

The town blames Elsa when a fatal icy spell is cast on Marian, not knowing that another resident has the same powers; Mary Margaret struggles to balance motherhood and leading the town.
Once Upon a Time · S4, E10

Fall

Mary Margaret and David rally the town to prepare for the impending curse, as Belle and the fairies work on an antidote; Gold works on an exit strategy; Emma and Elsa search for Anna.