For all of Jaune Arc's MSs, I will follow a set of rules I like to call the Arc rules, which will have the following rules.

Rule 1: No Gundam type units, just amped up mass production or limited production suits.

Rule 2: Melee weapons only, no gun type weapons, throwing weapons are fine.

Rule 3: Unit will be highly mobile and medium weighted.

Without further ado, here is the suit.

I do not own RWBY, but I do own the custom suit design.

MWF-JG71 Raysta "Paladin"

Appearance

-Base Form: Based on the Yoon Sefan custom Raysta, the head dons a knight's helm that covers the face, but a small visor is allowed with a plume attached on the back part of the head. The chest dons a white diamond-shaped chest plate cut off above the lower abdomen and white spaulders with rerebraces set under them. The shoulders have armor plates that are fixed on and run down to the mid arm. The right arm mounts a damaged Gravity Dust generator on the palm. The left arm mounts Crocea Mors in its sheathed form with the blade handle sticking out. The side boosters on the waist were replaced with containers that have throwing knives inside of them and the back waist holds a hyper mace. The legs retain their side boosters, but on the back part of the leg is a large treadmill. The back was given the same backpack used by the Dagger, but it has 2 Dust beam sabers sticking out instead of one. Color is white with yellow outlines.

Armaments

-Crocea Mors: A mobile suit sized version of Jaune's main weapon, however unlike other weapons that students use, it doesn't have a gun form and it is purely melee only. The weapon was handed down from Jaune's great-great-grandfather who used it during the Great War. Despite it being a relic, it has proven to be very durable in combat. The sword and shield are made from an unknown material that grants the sword great sharpness with it being able to cut a Death Stalker's tail clean off and the shield being durable enough to stop energy based attacks with no sorts of dents or scratches on the shield. The weapon was delivered to Jaune when he had received his MS by an unknown person.

-Mk315 "Stiletto" Rocket-Propelled Anti-Armor Penetrator: Located in the container that is on the side waists, the knives emit sonic waves that can weaken the armor of a target and when it hits a target, it explodes. The knives are also rocket-propelled, meaning they can be used as throwing weapons.

-Hyper Hammer: (Design is the same as the Gundam Hammer used by the Gundam in the original series) Mounted on the back waist of the unit, it essentially a spiked ball and chain with a handle along with boosters on the ball. Jaune can use this weapon as a melee weapon or throwing weapon as the boosters allow the weapon to maneuver and increase its striking power.

-Type 3 Dust Energy Sword: Sticking out on the backpack, it uses a heavily refined Dust crystal to create the blade, it can also have different elemental effects if using a combination of Dust crystals, but the blade's operational time is exactly 30 minutes before the crystal burns out and breaks.

Special Equipment and Features

-"Aura" Phase Shift Armor: A special energy field that connects to the pilots Aura if they had unlocked, it works the same a regular hunter's Aura, it allows the MS to shrug off a few fatal hits, but Aura depletion is doubled since the Aura has to generate a bigger field.

-Gravity Dust Generator: Located in the backpack, this allows the suit to "float" or stay in the sky for a certain amount of time, this allows the suit to fight in the sky without the fear of falling, but the Dust supply in the generator is limited, operational time is about 45 minutes. There is a smaller version on the right palm, but it is damaged, Jaune uses this to stop incoming projectiles, but the generator can malfunction and not work.

-Thruster Unit: Mounted on the sides of the legs, it allows the unit to quickly move forward to attack enemy targets.

-Treadmills: Mounted on the back of the legs, they are used to move at high speeds on the ground and can easily crush small targets.

-Semblance Generator "Fortify": Located inside the cockpit, it allows the pilot to use their semblance, but details on Jaune's semblance is small, but it is known to reinforce the body of the user to take larger hits and possibly rebound some damage to the sender. It was seen to break a Death Stalker's tail and damage the arms of Yang's mobile suit.

Manufactor

-Junk Guild

-Jaune Arc

-Beacon Academy

Operators

-Jaune Arc

History

First created by the Junk Guild before one unit was purchased in secret by Jaune Arc after sometime he forged his way into Beacon and the unit was secretly transported to the Beacon mobile hangers, but this was not the case as Ozpin already knew about it, but he allowed it. Originally, the unit only had the twin Dust beam sabers as its only weapon, but Ozpin ordered extra armaments for the unit which included the throwing knives and hyper hammer, but it was unknown who created the mobile suit sized version of Crocea Mors. Unit was first used during the test at Emerald Forest for the second part of the exam. This part includes hunting down a behemoth class Grimm with their newly formed team. The newly formed team JNPR engaged with 3 Death Stalkers and a Nevermore, but with the support of the newly formed team RWBY, they managed to defeat all 4 of them. While Jaune proved poorly in actual combat, he was skilled in hit and run tactics while he was in his mobile suit.

Next Unit: Nora Valkyrie's Mobile Suit

Jaune's combat style while he is in his mobile suit is similar to how Rygart Arrow from the anime Break Blade fights while he is in his unit.

"Fortify" is what I'm calling Jaune's semblance until RT reveals its true name