This article has been nominated for merging, with the reason being it should be in the alternate forms section of the Finn article. If you disagree, please discuss on this talk page. Thank you.
A Mirror Finn looks exactly like Finn whilst in the mirror, but when one steps out of it, it appears as a three-dimensional shadow of Finn. They have straight, waist-long hair. According to what Lumpy Space Princess wrote in her book, she describes them as being more attractive than Finn.