A medieval doctor would have called him saturnine.
There is the mercurial temperament, the genial temperament, the saturnine temperament, and they are very different things.
It was saturnine, self-contained and almost stealthy.
Saturnine, manifesting at a large size, shattered the bridge the two were on.
They ran the gamut of sounds and emotions from electronic and avant-garde to acoustic and symphonic, joyous and dreamy to saturnine and sardonic.
He is said to have been a prodigious magical student in his day, and is described as having a wolfish, saturnine face with a tangle of iron-grey beard.
