Protectors are chest armor found on some Ultras, they are known as the most durable part of an Ultras anatomy and are often cited as being nigh indestructible. Unlike Ultra Armors, this armor is not the Ultra's skin. For a few, the armor serves the role of solar panels, enhancing their natural solar energy absorption abilities and allowing them to augment their time limits. Only a select number have them, implying they only appear in a few bloodlines.
Related Post : Source : ultra-wikia
