Suggestions by @underworld_stories

Tom Cavanagh

as Harrison Wells in Firestorm: Snowstorm

Xolo Maridueña

as Cisco Ramon in Firestorm: Snowstorm

Jamie Dornan

as Carter Hall in Firestorm: Snowstorm

Joel McHale

as Ray Palmer in Firestorm: Snowstorm

Timothée Chalamet

as Hartley Rathaway in Firestorm: Snowstorm

Zendaya

as Caitlin Snow in Firestorm: Snowstorm

Patrick Stewart

as Martin Stein in Firestorm: Snowstorm

Tom Holland

as Ronald Raymond in Firestorm: Snowstorm

Walker Scobell

as Björn Ironside in Vikings: The Movie

Bill Skarsgård

as Floki Vilgerðarson in Vikings: The Movie

Alexander Skarsgård

as Rollo in Vikings: The Movie

James McAvoy

as Æthelstan in Vikings: The Movie

Anthony Russo

as Director in Green Arrow: The Emerald Archer

Jensen Ackles

as Floyd Lawton in Green Arrow: The Emerald Archer

Mary Elizabeth Winstead

as Helena Bertinelli in Green Arrow: The Emerald Archer

Nathan Fillion

as Malcolm Merlyn in Green Arrow: The Emerald Archer

Katheryn Winnick

as Dinah Drake in Green Arrow: The Emerald Archer

Dacre Montgomery

as Roy Harper in Green Arrow: The Emerald Archer

Charlie Hunnam

as Oliver Queen in Green Arrow: The Emerald Archer

Shawn Levy

as Director in The Flash: Ride The Lightning