Thread:Matteso586/@comment-4892653-20150328180804

1) Marceline was obsessed with her bass, because it probably belonged to her dead mother.

2) In "Thanks For The Crabapples, Giuseppe", Ice King cried after reading the poem, and didn't even notice. Its possible that he's subconsciously reminded of his past friendship with Marcy.

3) Flame King is worried that his wife would usurp him before Flame Princess can do it. That's why we never saw FP's mother.

4) FP calling out Bubblegum in The Cooler also made her think of her parents. It was her habit of keeping dark secrets that got them (or it) to dissolve.

5) PB possibly took Shoko's skeletal remains with her after Finn dug them out. We never saw that corpse again after The Vault. 