Suggestions by @steelsheik

Sendhil Ramamurthy

as Amar, the Darkness in Supernatural(story private)

Score: +1

Sally Field

as Samantha Campbell in Supernatural(story private)

Score: +1

Gwendoline Christie

as Lucifer in Supernatural(story private)

Score: +1

Justice Smith

as Charlie Bradbury in Supernatural(story private)

Score: +1

Emma Myers

as Jackie Kline in Supernatural(story private)

Score: +1

Diane Lane

as Bobbi Singer in Supernatural(story private)

Score: +1

Jerry Trainor

as Joey Mills in Supernatural(story private)

Score: +1

Miranda Richardson

as Aster Crowley in Supernatural(story private)

Score: +1

Kevin McKidd

as Rowen MacLeod in Supernatural(story private)

Score: +1

David Boreanaz

as Marius Winchester in Supernatural(story private)

Score: +1

Carla Woodcock

as Nadine Winchester in Supernatural(story private)

Score: +1

Zoë Bell

as Joan Winchester in Supernatural(story private)

Score: +1

Jessica Rothe

as Cassie in Supernatural(story private)

Score: +1

Ava Michelle

as Sammie Winchester in Supernatural(story private)

Score: +1

Samara Weaving

as Nadine Winchester in Supernatural(story private)

Score: +1

Candace Woods

as BreAnn in A Biography(story private)

Score: +1