The Armor of Zeldron appears at the end of the trials of embarrassment Finn had to overcome at the end of the episode "Blood Under the Skin." This armor allows the wearer to fly and gives them protection against all evil, even ghosts. However, at the end of the trials, Finn refuses to wear it because it turns out to be a female armor. The Armor was used against the Drop Ball Ghost, when he had turned evil, because Finn and Jake hadn't watched his Drop Ball routine.
The armor is completely golden, it only covers the upper body (besides the arms) and the head. The helmet on the head is in the form of a skull with horns and has long golden braided hair under it.