Question: are the deadlights its true form?
Answer: Deadlights. The Deadlights are the true form of Pennywise/IT. The Deadlights are orange writhing lights that exist in Todash Darkness. Pennywise uses its Deadlights to break a person's mind because one look at the Deadlights will make a person go insane due to it not being able to be comprehended by a human mind.