Suggestions by @comodin

Luke Evans

as Young David in Hulk (2003)

Score: +1

Kingston Foster

as Child Pepper in Iron Man 3 (2013)

Score: +1

Cailey Fleming

as Child Betty in Hulk (2003)

Score: +1

Matt Damon

as Young Thunderbolt in Hulk (2003)

Score: +1

Owen Atlas

as Child Bruce in Hulk (2003)

Score: +1

Jon Favreau

as Happy Hogan in Iron Man 2: Armour Wars (2010)

Score: +1

Hugh Jackman

as James "Logan" Howlett in X-Men 5: Apocalypse (2014)

Score: +1

James Marsden

as Scott Summers in X-Men 5: Apocalypse (2014)

Score: +1

Jon Favreau

as Happy Hogan in Iron Man 3 (2013)

Score: +1

Finn Jones

as Danny Rand in Luke Cage and Iron Fist Season 1 (2014)

Score: +1

Hayden Christensen

as Thomas Wayne in Flashpoint

Score: +1

Adrian Pasdar

as Franklin Hall in Hulk (2003)

Score: +1

Monica Bellucci

as Guiltea Nefaria in Iron Man (2008)

Score: +1

Dominic Cooper

as Howard Stark in Iron Man (2008)

Score: +1

Peter Billingsley

as William Riva in Iron Man (2008)

Score: +1

Bill Smitrovich

as William Gabriel in Iron Man (2008)

Score: +1

Sayed Badreya

as Abu Bakaar in Iron Man (2008)

Score: +1

Thandie Newton

as Anna Watson in Spider-Man (2012)

Score: +1

Scarlett Johansson

as Natasha Romanov in Captain America: The Winter Soldier (2014)

Score: +1

Emily Blunt

as Captain Marvel in MCMECU (Main Classic Marvel Extended Cinematic Universe)

Score: +1