His left leg is amputated above his knee and he walks with crutches or uses a wheelchair and does not use a prosthetic. He has a scar on his left arm from elbow to wrist. He wears his hair long, in a ponytail. He has a full beard and moustache, and his hair is graying.
Blue jeans, a blue shirt and blue loafers.
On December 29, 2013 Erwin left home to buy cigarettes at a local convenience store. He was using his crutches that day. He left in his 2002 silver 4-door Hyundai Elentra with a sunroof and a large wooden cross hanging from the rear-view mirror, bearing Missouri license plates MKG-E3P. He never arrived, and his car is also missing.