Suggestions by @zandermchade

Eva Green

as The Morrigan in The Iron Druid Chronicles

Score: +1

Katherine McNamara

as Fand in The Iron Druid Chronicles

Score: +1

Kristofer Hivju

as Thor in The Iron Druid Chronicles

Score: +1

Oliver Ritchers

as Perun in The Iron Druid Chronicles

Score: +1

Tina Fey

as Orlaith in The Iron Druid Chronicles

Score: +1

Joel Kinnaman

as Thor in The Iron Druid Chronicles

Score: -1

Alexander Skarsgård

as Lief Helgarson in The Iron Druid Chronicles

Score: +1

Fionnula Flanagan

as Widow MacDonagh in The Iron Druid Chronicles

Score: +1

Katie McGrath

as The Morrigan in The Iron Druid Chronicles

Score: +2