Josie and the Pussycats in Outer Space (1972)

S1E10 Now You See Them, Now You Don't

The Pussycats stumble upon a group of aliens who possess the uncanny ability to turn invisible at their discretion. Josie and her friends are left puzzled as they try to devise a plan to outwit and evade these mysterious beings. Just when they think they’re at a dead end, one of the aliens accidentally gains the power of invisibility, giving the group a surprising twist in their predicament.