I figured out where the "Hole" (Character) is located in OOO. It's in the center of OOO and it's called, "The Hole Near The Center Of The World"! You know why I'm right about this? Well, nobody has found the center of OOO before on Adventure Time till this episode! Only 2 kind of people who can hear the Hole's song is with those who can see the world with pure child like wonder (BMO) and those with a deep since of loss in their hearts (Ice King/Simon). Since Finn had a lot of sadness in the beginning of this episode, he can hear the Hole's song and he found the Hole near the center of the earth! The Hole was around since the beginning of OOO like 1,000 years ago which explains why the Land of OOO has a Hole in the center of the land.
So yeah! I am correct about this and it's all true!
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