Suggestions by @vadim_havard

Ralph Brown

as Doctor Faustus in Agent 13

Chris Evans

as Captain Hydra in Agent 13

Hugo Weaving

as Red Skull in Agent 13

Neal McDonough

as Dum Dum Dugan in Agent 13

Chloe Bennet

as Quake in Agent 13

Tim Blake Nelson

as Leader in Agent 13

Jóhannes Haukur Jóhannesson

as Copperhead in Agent 13

Cobie Smulders

as Maria Hill in Agent 13

Giancarlo Esposito

as Seth Voelken in Agent 13

Olli Haaskivi

as Penguin in Gotham

Olli Haaskivi

as Wilfred Nagel in Agent 13

Robert Downey Jr.

as Iron Man in Agent 13

Wyatt Russell

as U.S. Agent in Agent 13

Frank Grillo

as Crossbones in Agent 13

Emily VanCamp

as Agent 13 in Agent 13

Martin Freeman

as Everett K. Ross in Agent 13

Sebastian Stan

as Winter Soldier in Agent 13

Hayley Atwell

as Peggy Carter in Agent 13

Clark Gregg

as Phil Coulson in Agent 13

Arian Moayed

as P. Cleary in Agent 13