Lambda looks like a man in his mid 40s, in fact he's much older. He has teal wavy hair that he wears in a small ponytail, red eyes. His left arm doesn't have artificial skin, and the robotic construction of it can be seen. He is an artificial form of life, so-called segment of a scientist named Dottore (originally Zandik), the second of the Fatui Harbingers. Relaxed and casual man, doesn't care much about subordination or responsibilities despite doing his work properly.