Professor membrane

Professor Membrane is one of the main supporting characters of the Invader Zim series and the tritagonist in Invader Zim: Enter the Florpus. He is the father of Dib and Gaz, but he has very little time for his offspring, being one of the most famous and important people on Earth. The Professor, as he is often called, is rarely at home, so he supervises his kids in the form of a floating monitor, which often spews out pre-recorded reminders that are often way out-of-date. Expectedly, Dib and Gaz refer to him as Dad.