∆iden is a possible upcoming character in Fundamental Paper Education. Currently, she has only been seen in a few of Katie's artworks.∆iden has long black hair, accessorized with a fluffy beige ushanka atop her head. She sports a navy lightish-dark grey blue-like colored army coat with only one button closed, accompanied by a white undershirt, accessorized by a dark green and orange scarf. She also wears black fingerless gloves. To finish her attire, she dons a belt and jeans. A large scar is visible by her left eye. Additionally, her ushanka features a triangle crossed by two lines.While there is little to go off on about her personality, ∆iden appears to be a cold-hearted killer without any care in the world for her victims. Additionally, she may possibly not be the type to express her emotions, hence her official emotion chart. Judging by her weapons, she seems to have experience in killing people or animals alike. Notably, she also seems to not care about others causing harm to themselves, and seems rather interested in them doing so.Similar to ∆lice, ∆iden also has the "∆" symbol in her name, and both have a triangle with two lines like on ∆lice's necklace and ∆iden's ushanka, which may indicate a connection between the two. ∆iden dons a ushanka, a Russian hat, which may imply that she is of Russian heritage. As depicted in official artwork, ∆iden appears to have a pet dog.

∆iden:Thinking About Something In The Woods