Strange Klug (EntityTopic, 11)
From Compile Worlds
Strange Klug is a little book demon taking control of Klug's body. He appears in Puyo Puyo Fever 2, and despite the fact that only Amitie seems to care about the possession, is fought in the end by all three protagonists.
Strange Klug was sealed inside the book long ago, and his good parts later became Sig. Klug somehow released him for unknown reasons, but it's likely he either tricked into doing it or he did it unknowingly.
Some people say Strange Klug is like the FEVER duplicate of Doppelganger Arle, but besides having similar red clothes and being evil, the two are completely different, and the people who claim other wise are full of bullshit.
It is unknown whether the AAA will have to deal with Strange Klug yet, as what happened to Klug himself is still unknown.