Information on the biology and appearance of Vash the Stampede in the Trigun manga.
Physical Characteristics: Angel Arm | Basic Physiology | Drain Gate | Hair | Plant Markings | Plant Wings and Flight | Scars, Amputation, and Healing | Strength and Agility
Wardrobe and Accessories: Clothing | Earring | Energy Bullets | Glasses | Gun and Marksmanship | Prosthetic Arm
Other: Amnesia | Bounty | Cooking | Personality | Plant Communication | Relationships | Toma Equestrianism | Vehicle Driving
Nightow interview: translation https://web.archive.org/web/20071022074847/www.geocities.com/sumirechan/tri-chars.html
Aging after manga: https://www.tumblr.com/xoxo-otome/720321015731945472/2007-comickers-art-style-article-featuring-trigun