According to the search results, Beetlejuices IQ is a topic of debate. Some sources claim that his intelligence is not fully developed, and he has a lower IQ than an average human being due to microcephaly. Other sources suggest that his IQ is around 40, 60 to 70, or 84. However, it is unclear which of these claims is accurate, and there is no definitive answer to the question of Beetlejuices IQ.