Property of CarnoMS.
"Satan built this because of a deal one of our ancestors from long ago made with him, and it has been running strictly in the Flare family, more or less. It is an indestructible weapon of destruction, and it is now yours."~Kevin's father, Samuel, declaring that the Devil's Pendant is now his.
The Devil's Pendant is a necklace used by Kevin Flare and presumably Samuel Flare, along with other members of the Flare family more or less, as a weapon to turn into the persona of Demon. Although not a lot is known about the Devil's Pendant as of yet, it is known that the devil had created it because of a deal made long ago and that Kevin is the 473rd to acquire and use it.