Forum:Questions about 'Finn the Human'/'Jake the Dog'

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Just saw "Finn the Human", and in the alternate dimension, the Ice King died after stopping the bomb from going off. Does this mean that the crown didn't actually give him immortality?

Speaking of immortality, it seems like Marceline gets her immortality from her vampire roots, which never happened in the alternate dimension (hence her being extremely old). I wonder who her mother is? (She'd have to be human for her to be half-demon right?).

Also, another thought; the only reason he was able to stop the bomb was due to Lich's nonexistence. This kinda confirms that the Lich caused the war, no?