Finn and The Ice King and maybe Susan are humans

Iceking isn't

Now I know why you don't post your age, Isuika... lol

?

Yeh he is
watch all the seasons.

^She is not. The wiki states she is partially mutated, like Finn is 'supposedly'

Also: she is categorised as: unknown

Yeh but Ice King is, watch Holly Jolly Secrets and another episode which I forgot the name of D:

yep

SPOILER!!! ALERT!!! xD Ice King WAS a human!! The crown gave him powers, and made him like that! He was, like Marceline's BEST friend, and Susan is a fish, I believe. You may correct me if I am wrong, but please no hate, and if you say "Not cool! You spoiler!" I said Spolier Alert, and I shall do it again. SPOILER!!! ALERT!!!

Keralis, I know that's what I'm trying to explain XD

WIki's are not always true, the Wiki may say that Susan is a fish, but yeh. Not always correct.

And Ice King's name is Simon

Ice King's name before he started wearing the crown was Simon. He mutated, so he is no longer classified as a 'human'

What make's you think I got the idea Susan's a fish from Wiki? I don't use Wiki, I just watch The SHOW. Good day to you.

Sorry, I have anger issues.... ._. Anyways, I just have some idea Susan is a fish... :/ Idk

Keralis, I didn't mean you lol

>.>