|Introduced in||"Thank You"|
Ice Armor is armor used by Ice King in "Thank You." Ice King used it to safely stow himself away with sandwiches he stole from Finn and Jake. Although the ice armor is strong, he is totally immobile while in it, leaving Finn and Jake able to approach the obstacle however they can think of. They ultimately get Ice King out of the armor by hitting it multiple times with axes until it breaks.
It is made of solid ice with a series of three spikes on top. It has blocky, immovable ice arms and a peephole; through which Ice King sees, breathes, and mocks Finn and Jake. One of its hands is balled into a fist with a useless ice sword in it. Ice King trapped himself inside of it, appearing to have gone so far as to freeze all but his head solidly into it. Inside of the clear ice armor, Ice King wears nothing but his underwear.
- In the video game Adventure Time: Hey Ice King! Why'd you steal our garbage?!!, Ice King wears his Ice Armor in the first part of the final boss. His Ice armor is fairly easy to destroy and expose Ice King, depending on Finn's attack statistics.