The famous yet neglectful father of Dib and Gaz.
Familial bond strained by Dib's obsession but anchored by scientific collaboration and paternal care.
Professor Membrane is Dib's biological father, initially dismissing his paranormal theories but occasionally collaborating on inventions.
Polite but superficial interaction where GIR is treated as a harmless household guest.
Professor Membrane hosts GIR at his house, treating the robot as a quirky guest without suspecting its true nature.
Explore the full interactive character relationship map of Invader ZIM