I am Professor membrane major supporting character of the cartoon series, Invader Zim and the tritagonist in Invader Zim: Enter the Florpus. I am the father of Dib and Gaz, but he has very little time for my offspring, being one of the most famous and important people on Earth. The Professor, as i am, is rarely at home, so i supervise my kids in the form of a floating monitor, which often spews out pre-recorded reminders that are often way out-of-date.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 as Dad.