Name: Hibiki and Shizuka Meido
Title: Mecha Maids, Smash Sisters, The Twins, Heal Bot (Hibiki), The Iron Maiden(Shizuka)
Age: As twin sisters, they're both 27 years old.
Gender: Female
Allegiance: Machina of Men
Race: Hibiki is human, however Shizuka is a Holy Spirit. Essentially, she had died and went to heaven. She can now interact with other mortals even beyond death, though after siding with the Machina of Men, Shizuka has to go through great lengths to stay by her sister's side.
Height: Hibiki - 1.6 Meters, Shizuka - 2 Meters
Weight: Hibiki - 65 kg, Shizuka 76kg
Personality:
Hibiki is energetic and devious. As the more talkative of the twins, she often speaks on behalf of herself and Shizuka, and is essentially the brains between the two. While always full of pep and eager to fight, Hibiki knows better than to just rush-headlong into things and often plans out her attack. She likes a more supportive but active role to ensure that everyone is fighting at their peak efficiency. Hibiki is oddly good at seeing through people and getting a read on them, which she simply attributes to a woman's intuition.

Shizuka is relaxed and affable. She always seems a bit sleepy or spacey, but make no mistake, Shizuka is even more eager than Hibiki to get things done. Despite her calm demeanor, she's far more likely to jump into things and go with the flow than Shizuka is, and she'd do it all as quietly and effectively as she can. Shizuka likes to be on-point and fairly proactive, taking advantage of her enemies' weakness at a moment's notice. Shizuka can be dense at times, making her unaware of more subtle or mature things. Shizuka also isn't emotionless, she just has a good control over her own feelings.

History: Shizuka and Hibiki were born as twins, their names chosen for how each of the babies acted as soon as they were given to their mother: Hibiki never stopped crying, and even after she did she was always cooing for her mother's affections. Shizuka was more quiet, and after she calmed down she seemed to go straight into a nap. However Shizuka's silence wasn't just a quirk in her personality: of the two twins, she had the weakest health as a child. Before the twins were even two years old, Shizuka passed away and Hibiki would grow up without a sister.

At least, until Hibiki was 14 years old. One day she had a dream; a dream of a girl with blue hair who looked like her. Hibiki knew this girl was Shizuka, her would-be twin sister if she was alive today. Shizuka warned Hibiki of danger coming, giving her visions and warnings of things to come. Using this knowledge, Hibiki convinced her parents to move just in time: demons soon came to their home town, razing it to the ground. During that battle, Hibiki swore she saw her sister there at their old home, waving them goodbye.

Ever since that day Hibiki looked for her twin sister the only way she knew how: She had joined with the Machina of Men and trained as a Combat Engineer. She used the opportunity to get close to battle and find a glimpse of her sister, and one day she did. Hibiki was fighting against the forces of Heaven when her unit was ambushed by angels. Though death was cheap in the Nexus, it was still a fearful and painful experience. Hibiki's teammates were slaughtered one-by-one until eventually it came to her. But just before the deathblow could have happened, she was instead swept up into the arms of an another. Her sister, Shizuka.

The two escaped the battlefield, where they eventually came back to the Machina of men. Shizuka wanted to protect her mortal sister more than anything else, even if it meant betraying the heavens themselves. However Hibiki's commanding officers were hesitant to accept an angel in their ranks, and Hibiki refused to allow them to run tests on her. So a compromised was met; using their technology and Shizuka's knowledge of angelic rituals and magics, she was bound to her sister Hibiki, ensuring that if Shizuka was ever too far away from her sister that Shizuka's body would be pulled towards her. Additionally, Shizuka's angelic powers were suppressed with mechanized armor dubbed "The Iron Maiden", which while powerful for a mortal, would suppress most of Shizuka's powers as a Holy Spirit. With this arrangement, Shizuka joined Hibiki as a Combat Engineer.

Powers:
Hibiki doesn't really have any "powers" per say, and most of her tricks are reliant on her weapons and equipment (Detailed below). However Hibiki is a skilled sharpshooter and repairman, often employing both skills in battle at the same time. Hibiki specializes in utilizing various equipment and gadgets to overwhelm the enemy, as physically speaking, Hibiki is a strong and athletic woman but still just human.

As a Holy Spirit Shizuka is normally capable of some magics, mostly minor things such as blessings and protective wards. She also knows a variety of holy rituals that, while they take a long time to cast, can be very powerful. However nearly all of these things are suppressed while she is in her Iron Maiden armor, though she is allowed to be out of it when she is not expecting combat and remains near Hibiki. Currently, Shizuka is under a spell that forces her to be near her sister at all time. This manifests as a physical force that will push Shizuka towards her sister, following her wherever she would go. If for some reason Hibiki gets taken away in such a way that Shizuka could not physically chase after her, she would appear near her sister within 24 hours, however during that time Shizuka's body goes into a comatose state. Physically, Shizuka actually does not feel pain or exhaustion, allowing her to go beyond the normal limits of most humans. That being said, Shizuka is no more capable that her sister is, only that Shizuka wouldn't tire out or cease due to pain.

Weapons:
Both Sisters:

"Cerberus" Modular Gauss Rifle - A combat rifle that uses a miniature but powerful electrical magnetic field to propel bullets at great speeds. It's called the Cerberus as it has three different firing modes. It has a long range mode where it can fire a charged shot with great accuracy and range, even causing an explosion upon impact. This mode is best for sniping or being used against heavily armored opponents. It's second mode is more automatic, either fully or semi, and instead of one powerful shot it instead fires a burst of weaker bullets. However while each shot is individually weaker than the other modes, they have a sort of incendiary property that allows them to continuously burn opponents who were hit. It's third mode is essentially a shotgun mode, where it fires a multiple bullets at once. Roughly as powerful as the first mode but with a shorter range, the purpose of the third mode isn't damage but impact: even at medium ranges it hits with enough force to dent most armors, and against small, lighter targets, if the blast itself doesn't kill them it will certainly knock them off their feet. Additionally, other accessories can be attached to the rifle for additional combat effectiveness, from anything a simple as a bayonet to even another gun.

Pulsar Gauss Pistol - Similar to the rifle, this pistol uses a miniature electrical field to fire bullets. An emergency weapon, it simply has a fully auto function that fires high impact bullets. It has a decent range as well, making it essentially a weaker fusion of the three forms of the Cerberus rifle.

Charge Blade - What appears to be a simple combat knife is actually an advanced plasma weapon. While it functions as a regular blade in it's off state, when activated it can emit a powerful plasma edge that would melt through nearly all types of organic and inorganic materials. However the plasma is not infinite, and after ten minutes or so the fuelcell that powers the plasma edge would need to be replaced.

Hibiki's Gear:

Bastion Turrets - These are automatic turrets that Hibiki can place using a deployment package. Hibiki can leave them where they're at to attack anyone she deems an enemy, as well as see through their sights to maintain a surveillance in an area. She can control them either remote or manually as well. Bastion Turrets also create a forward shield that protects everything directly behind them, leaving only their turrents directly damageable.

Tricky Bombs - A variety of explosives that Hibiki uses to lay traps or attack her enemy. She has simple ones such as bombs that explode into fire and shrapnel, but she also has some that create slick oil, a sticky glue, bombs that create a heavy gravity to bring down flying opponents, bombs that implode, and much more. Hibiki get's these bombs from a specialized bag on her waist that creates them on the spot, though they do require raw material to make, which Hibiki typically gathers before hand or on the battlefield.

Shizuka:

Rocket Sledge - A large warhammer that suits Shizuka's blunt personality and fighting style. It's strength lies in it's simplicity: it's a regular, albeit masterfully crafted titanium hammer with a rocket booster to grant it speed far beyond what one could swing. It is so powerful that Shizuka can't even use it without the armor or else she's liable to break something.

Equipment:

Both Sisters:

IM-0RT4L Combat Armor - Combat armor that the sisters wear in battle. Not only do they provide them protection from attacks but also environmental hazards, allowing them to survive environments that lack air, are deathly cold or hot, or even toxic to life (at least for a short time). Shizuka's own armor is known as The Iron Maiden (Including the capitalized "The" is a must) which was made with the express purpose of suppressing holy powers. Not only of Shizuka's own, but of other angelic beings near her.

Hibiki:

Stalker Cloak - A collar that Hibiki wears around her neck, the Stalker Cloak can generate a small field around her body that not only turns her invisible, but also silences any noise that originates from within the field to anything outside of it. So while Hibiki can still hear things perfectly fine, no one will be able to hear her. The stealth field also removes any traces of heat, aroma, or even life within it's area of effect, allowing Hibiki to go completely unnoticed. However the Stalker Cloak requires much power to use, and once it's used it will remain on until the power goes out. They last roughly 10 minutes at a time.

Repair Drones - Hibiki has a bandoleer of what appear to be grenades, but are actually small robots who can help repair machines for Hibiki. While durable, they are not suited for combat, however they are almost as good at repairing machines and robots as Hibiki is, and can often undo damage done in a matter of seconds. Hibiki carries three of these.

Shizuka:

Force Shield - on Shizuka's left arm is a miniature shield that acts as the generator to her force shield. She can create a large sturdy force field that will block and repel nearly any sort of attack that hits it's surface. Because it uses only force, it's actually quite light weight, and thanks to it's durability Shizuka's force shield is also handy to smash her enemies with. While enough damage can break the shield, it only needs a minute to recharge.

Other: Hibiki and Shizuka's outfits for repair and mechanical work is their maid uniforms. It helps with moral.