Real name Jacques Foccart, was the second to assume the name Invisible Kid.
Invisible Kid is a member of the Legion of Super-Heroes, a super group based in the 30th and 31st centuries of the DC Universe. He's a genius in biochemistry and designed a serum to give him the ability to turn invisible. Much later when Brainiac 5 accidentally unleashed a murderous Computo, Jacques Foccart partook of Lyle Norg's invisibility serum to help stop it. The Jacques Foccart version of the Invisible Kid has made background appearances in the "Lightning Storm" and "Substitutes" episodes of the Legion of Super Heroes animated television series. The background, Laboratory Entrance by Sebastian Wagner. Modified and painted over, but of course.
I kind of like this costume better than the original design for Lyle Norg.