Marshmallow

Marshmallow (voiced by Paul Briggs) is Elsa the Snow Queen's personal bodyguard and a supporting antagonist in Jeffrey, Jaden & Friends get Frozen. 

When Anna, Kristoff, Olaf, Jeffrey, Jaden, and their team arrived to Elsa's castle to try and convince her to come back with them, Elsa refused fearing she would hurt anyone. Demanding to be left alone, Elsa created Marshmallow who forces everyone out the castle. He pursued the team to a cliff, and after escaping them, Marshmallow warned them never to come back. Marshmallow was later defeated by Hans.

Trivia

• Even though the team could've easily stopped Marshmallow, they refused to fight him, because according to Jeffrey, it would be like fighting Elsa.
• Because Elsa created Olaf and Marshmallow, that makes the two brothers.
• Marshmallow will make an appearance in Jeffrey, Jaden, Hiccup & Friends get Frozen Fever.