Liam Cunningham
Davos Seaworth, aka the Onion Knight, is played by the insanely gifted Irish actor Liam Cunningham, who just so happens to keep his beard a bit more trim in the real world.
Kristofer Hivju
Ah yes, the Norwegian actor Kristofer Hivju does in fact have that extravagant beard in real life, although it’s slightly more tame than the fierce Tormund Giantsbane.