Troglodyte was the second attempt of cloning a warrior for Sinestro.Sinestro Corps member Doctor Romulus Ulysses Ensane the brain child behind the cloning of Troglodyte is a renown physician and bioengineering. Doctor R.U.Ensane was hoping to crack the code of the Kryptonians DNA but fell short.He named his creation Troglodyte after a race of people he met on another planet because they was brutish.Sinestro was some what please with Troglodyte but he wants something so strong and ruthless that it will rip thru the Green Lantern ranks and will totally annihilate The Corps.