"Create a 3D rig of an elderly person. The character should have realistic, aged features such as wrinkles, gray hair, and a stooped posture. Ensure the rig includes fully articulated limbs, a flexible spine, and detailed facial expressions that can convey a range of emotions such as wisdom, kindness, and weariness. The character should wear simple, comfortable clothing and have textures that highlight the aged skin and other details associated with an elderly person.