Image imported from derpibooru 
Original Description:
 
CAST:
 
 
Megan Williams as Finn The Human  
Lofty as Jake The Dog  
Heart Throb as Princess Bubblegum  
Magic Star as Marceline The Vampire Queen  
Wind Whistler as Ice King  
Baby Ribbon as BMO  
Lickety-Split as Lumpy Space Princess  
Rosedust as Flame Princess  
North Star as Lady Rainicorn  
Paradise as Martin Mertens  
Shady as Betty Grof  
Gingerbread as Cinnamon Bun  
Sweet Stuff as Peppermint Butler  
Scoops as N.E.P.T.R  
Baby Sleepy Pie as Gunter  
Posey as Tree Trunks  
Gusty as Billy  
Morning Glory as Susan Strong  
Buttons as Abracadaniel  
Hydia as Huntress Wizard  
Draggle as Magic Man  
Baby Heart Throb as Prismo  
Weston as Snail  
Lavan as Grob Gob Glob Grod  
Honeysuckle as King of Ooo  
Masquerade as Hunson Abadeer  
Mimic as Earl of Lemongrab  
Ribbon as Patience St. Pim  
Cupcake as Fern  
Danny Williams as Uncle Gumbald  
Captain Crab Nasty as GOLB  
Beezen as The Lich