Lester Joseph Gillis ( December 6 , 1908 – November 27 , 1934 ) , known by the alias George Nelson and Baby Face Nelson , was an American bank robber in the 1930s . He was given the nickname Baby Face due to his youthful appearance and small stature , although few dared call him that to his face . Criminal associates instead called him " Jimmy " . He became partners with John Dillinger , helping him escape from prison in Crown Point , Indiana ; Nelson and the remaining gang members were labeled as public enemy number one . Nelson was responsible for killing more FBI agents than any other person . He was fatally shot by FBI agents during a shootout called The Battle of Barrington
The Battle of Barrington
The Battle of Barrington
Baby Face Nelson