to be fake, to be see-through, for one's real side to become apparent
When troubled stars carry around 'self-help' or spiritual books, purposely showing the covers to be shown in tabloid photos in hopes of recovering their ill-fated careers or image-- they are transparent.
A parental figure, who through either divorce, occupation, or general neglect must travel across many miles in order to interact with offspring, and is rendered nearly invisible in average family life.
Kid 1: Who was that guy with you and your sister last night?
Kid 2: Oh, Chuck? That's my was my dad. Ever since he fucked that waitress, he's been my Transparent.