He was the first man to walk on the moon.' The answer to the crossword puzzle for the term NAME HIM! is WHO, which refers to Neil Armstrong. Neil Armstrong was an American astronaut who became the first man to walk on the moon on July 20, 1969. He was part of the Apollo 11 mission, and his famous quote 'THAT's one small step for man, one giant leap for mankind' has become iconic in the history of space exploration.