Hair: LEGO Bald Top with White Hair (65097) – BrickOwl Link
Head: LEGO Gunnar Eversol Plain Head (3626 / 38356) – BrickOwl Link
Torso: LEGO Tan Aldrich Killian Torso (76382) – BrickOwl Link
Legs: Minifigure Hips and Legs (73200 / 88584) in Tan – BrickOwl Link