Baby Face Nelson, born Lester Joseph Gillis in 1908, was an American bank robber and gangster during the Great Depression. He became notorious for his violent crimes and was associated with the John Dillinger gang, which was involved in a series of bank heists across the Midwest. Nelson was known for his youthful appearance, which earned him the nickname "Baby Face." He was involved in several high-profile shootouts with law enforcement. His criminal activities ultimately led to his death in a shootout with FBI agents in 1934, marking the end of his brief but infamous criminal career.