“And he issued forth clad in black armour, and he stood before the King like a tower, iron-crowned, and his vast shield, sable unblazoned, cast a shadow over him like a stormcloud…” ~ Morgoth challenges Fingolfin.
A painting by Ted Nasmith, depicting Morgoth and Fingolfin.
Morgoth duelling Fingolfin.
Morgoth outmatching Fingolfin.
Morgoth sentences Húrin.
Lúthien and Morgoth.
One of the scariest depictions of Morgoth ever, this is precisely how he should be shown: A giant monstrous devil clad in darkness.
A different depiction of Morgoth. Note how he looks much more humanoid than his other monstrous depictions. Also note the Silmarils in his crown.