In Dungeons & Dragons (D&D), Tieflings are a fantasy race known for their demonic heritage. They are descendants of humans and fiends (like demons or devils), which gives them distinct and often intimidating appearances. Typically, Tieflings have features such as horns, tails, sharp teeth, and eyes without pupils. Their skin tones can range from human-like hues to reds, blues, purples, or other more unnatural colors.