a slim man of fifty years with sharp features. Jon Snow considers him spare and hard, as well as compact and sinewy. Alliser's black eyes resemble onyx, obsidian, and flint, and his black hair is streaked with grey. He can have a thin smile and a sharp voice, cold and flinty. The knight is humorless, bitter, and mean spirited, but more clever and dangerous than Janos Slynt. Jon and Tyrion Lannister both consider Alliser to be a poor instructor.