Paul Carr played Lieutenant Lee Kelso, the Enterprise helmsman killed by Gary Mitchell on Delta Vega, in the second Star Trek pilot, Where No Man Has Gone Before.
Paul Carr (1934–2006) was a busy American television actor from the 1950s onwards. In Where No Man Has Gone Before he plays Lee Kelso, who sits beside Gary Mitchell at the forward console and is an easy-going friend of both Mitchell and Kirk.
After the Enterprise is crippled at the galactic barrier, Kelso leads the work at the lithium cracking station on Delta Vega, cannibalising its equipment to repair the engines. He also rigs the destruct switch that Kirk orders as a last resort.
Kelso is the first victim of Mitchell's escape: the mutated navigator strangles him from a distance with a length of cable. Kirk's log later records that he gave his life in the performance of his duty.