|image =[[File:19517E94-1AF2-4525-B16C-331567046F12.jpeg|thumb|First Form]
|name = Ryos |kanji = シャドーアーマー：リョアス |romaji = Shadouāmā: Ryoasu |full = Shadow Armor: Ryos |type = Armor |status = Active |faction = The Revolutionary Army |user = Pj Night |abilities = Fullbody Armor Enhanced Physical Abilities Morphing(Transformation) Shadow Manipulation |trump = Shadow Cannon |manga = Chapter 8 |anime = Episode 2 |gallery = Yes/No }}
Shadow Armor: Ryos was an Armor-type Teigu that took on the form of two twin black bracelet in its sealed form. When released, it takes the form of black and gray, full-body armor losing the cape that Incursion had and gain two giant raven wings which are usually folded.
Ryos was an Armor-type Teigu created from the flesh of Skiadrum, a Super Class Dragon Danger Beast. Like Incursio, it was a prototype for what would later become Grand Chariot. The Danger Beast's power was so great that its flesh is still alive within, giving the Teigu the title of "Shadow Dragon Armor". In the past, Ryos once belonged to a high-ranking Imperial Army officer and taichi expert Heiden, who was also Pj's father, and later came into Pj's possession and was used while Pj was running from the Imperial Army.
The stance required to activate Ryos in where the user will cross their arms where the key appears and the Danger Beast within will cover its wielder with armor. The Armor it's self grants the ability Morph into weapons around the limb areas (Blade's, Guns etc) or even extend as a spear. Ryos also has the ability to manipulate the shadows. Due to being a full body-armor, Ryos had a near-indestructible defense with the only thing able to pierce it being other Teigu. The armor also greatly enhanced the user's physical abilities such as speed, strength and agility. The users of Ryos were also able to wield a long demon Scythe or a chained Scythe weapon called "Ryujin" which was capable of cutting through Danger Beasts with ease.
It was later revealed by Pj that like Grand Chariot, Ryos general is always in a state of equilibrium, having no explosive power, meaning that both Ryos and Grand Chariot cannot be forcibly evolved like Incursio can, possibly due to how dangerous Incursio becomes if it forcibly evolves too much. This is probably what makes both Ryos and Grand Chariot the advanced version of Incursio.
Shadow Form : The user transforms their body into a shadow, granting them the ability to move around surfaces. The user can transition in and out of this form as they please.
Knuckle Shadow : The user shapes their shadow into a fist to punch the opponent upwards. Multiple fists can also be created as well.
Guard Shadow : The user uses their shadow to create a shadow dome that protects them from incoming attacks
Shadow Orochi : The user shapes their shadow into multiple snakes to attack and bite their opponent.
Shadow Pull : The user creates a shadow in the shape of a giant hand that can travel over large distances to retrieve targets and bring them back to the user. The target is pulled into the shadow, and then brought back to the user.
The Trump Card of this Armor is the Shadow Cannon Ability the user configures all of the armor onto a single limb to take the form of a huge cannon that launches a ball of shadow energy in the form of a very powerful beam. This move has Been dubbed Shadow Cannon.