I'm hoping he's still out there, somewhere
I hope you're still in there, somewhere. Simon...
comic response to that last Adventure Time Episode ;n;
uhhh in my mind this comic is set BEFORE the current series, when Marceline was out traveling the furthest reaches of Ooo(before she tries to take Finn and Jake's house in her first appearance)
and that part with Ice King in there, in my mind, is supposed to be one of the first times Marceline has seen him after his complete transformation (which is why he doesn't know who she is yet)