O'Neil

Colonel O'Neil (with only one "L") is a US military.

Biography
Nothing is known about Colonel O'Neil but he has no sense of humour at all, according to Colonel Jack O'Neill (SG1: ).

(1998)
When Armin Selig, an investigation journalist, is about to make public the Stargate Program, and more, to reveal what really happened a few months ago in space (SG1: ), Colonel Jack O'Neill says to him to correctly spell his last name as there is another Colonel "O'Neil" with only one "L", and this one has no sense of humour at all.