|“||It's all fun and games until someone gets eaten by a Marshmallow.||„|
|~ Stitch Kingdom|
In Elsa's ice castle, Anna arrives to bring Elsa back to Arendelle. When Anna refuses to leave Elsa, who wishes to be alone, Elsa creates Marshmallow to force Anna, Kristoff, and Olaf out of the castle. Anna, however, throws a snowball at Marshmallow, provoking the snow beast who immediately grow sharp icicles all over his body and roars loudly. He then pursues the trio until they are cornered at a cliff. Marshmallow attempts to pull Kristoff and Anna back up from their escape rope. He tells them to not come back as Anna cuts the rope. This causes the two to fall, leaving Marshmallow to return to Elsa.
When Elsa's castle comes under attack by Arendelle's soldiers, Marshmallow helps protect it by smashing away the soldiers. The Duke's Henchmen shot arrows at Marshmallow, causing him to grow more icicles all over body once more, growing sharper claws and fangs. However, one of the men, Hans, slices Marshmallow's left leg off, causing him to become unbalanced. While Hans continues to the castle, Marshmallow tries to grab him, only to lose balance and plummet into the chasm surrounding the castle.
After the credits, it is revealed that Marshmallow had survived, and he's seen limping back into the palace where all he finds is Elsa's crown. The monster happily crowns himself ruler of the palace and restores his wounded leg to perfect health, happily continuing his life in the North Mountains.
Mickey, Donald, Goofy, Ralph 2: Monsters Unleashed Edit
It was the last costume to come to life as a real monster by the Monster Hive machine; he was one of the four monsters that Scooby and Shaggy created when messing around with the machine. The main difference about the Tar Monster was that he could spread himself and therefore appear much larger. He attacked the citizens of Coolsville (theatrical films)|Coolsville, trapping an entire street full of people in tar, and wraps the man in the car with tar tentacles, putting one over his mouth, making him spit and gurgle the tar as the tentacle rapidly oozes and covers the man's body in tar, while wrapping two more tentacles around his arm and his chest so he can't struggle.
Mystery Incorporated (theatrical films)|The gang returned to the Monster Hive and needed to connect the reprogrammed control panel to destroy all of the monsters that had been created. He quickly stops Fred with a tar tentacle then says, "Now your stuck in my trap," then restrains Fred with more tentacles. He then grabs and lifts Daphne in the air, and covers her in tar. She is later seen passed out, presumed from being squeezed by the Tar Monster. He then goes after Velma, knocking her onto the floor and covering her in tar. Shaggy gets the control panel, and backs onto a centerblock. The Tar Monster wraps large tar tentacles around shaggy and smothers him in tar. Scooby is left, who needs to get to the other side of the room.To do so, Scooby used a fire extinguisher to harden the monster's tar, Shaggy still had the control panel, when Scooby froze part of the monster, Shaggy was able to break his arms free from the tar tentacles, yet he is still wrapped in tar tentacles from the waist down. Scooby used the fire extinguisher to half skate and half surf on the Tar Monster to get to the other side; it was finally destroyed when Scooby connected the control panel to the base, the Tar Monster was the last to die as he was almost invincible in comparison to the other monsters. He drowned in his own body and died after Scooby turned on the machine where to put the control panel. His huge tar body dried out and he turned back into a costume with the Pterodactyl Hybrid, the Miner 49er, the Skeleton Men, and the Zombie.