Eventually Vought would reveal his death In Season 2's The Big Ride, where Homelander delivers a speech at Translucent's funeral, lying that he was killed by a supe-terrorist named El Diablo.

How does translucent die?

Hughie wanted to let Translucent go, but he changed his mind when Translucent escaped. He detonated the explosive, killing Translucent and buying the group more time to live and figure out a plan.

How did translucent escape the cage?

Sensing his life in danger, Translucent offers information, telling them to seek “Popclaw” (Brittany Allen) for info on A-Train. As Homelander draws near, Translucent escapes by shorting out his electric cage with his own urine.