Isaac: Athletic young man, 1.80m tall, light olive skin, short dark brown hair, green eyes, light stubble, sharp jawline.
Clothing: Beige long-sleeve shirt, dark leather vest with straps, flexible dark brown pants, brown parkour boots. Leather gloves with fingertips exposed, belt with small pouches, optional hood.
Style / Vibe: Agile, stealthy, confident, parkour adventurer, practical outfit, slightly worn clothes from outdoor activity.
Optional Props: Small dagger on belt, rope/grappling hook, hooded cloak for stealth.