From Wikipedia, the free encyclopedia. Chris O'Neil  (born November 8, 1994) is an American actor, primarily known for the 2007 science fiction drama, The Last Mimzy. O'Neil was born in Boulder, Colorado and attended Dennison Elementary. He attended D'Evelyn Junior/Senior High School as a seventh grader. He attended Denver Academy. His family hired an acting coach for him after he did well in sc... show more