Abaddon
Like the Father, the Son and the Holy Spirit... One split into three. Three come together as one to form the whole: The God Destroyer, Abaddon.
Abaddon, The Bottomless Pit. (It's name means God's Destroyer)
A realm as old as the universe itself. The realm and the beings residing in it play a key component in keeping the universe in balance.
When God and Heaven are created, Abaddon is trapped underneath Hell by God in order to keep Heaven from being destroyed by them.