Metal Slug Wiki
Metal Slug Wiki

Metal Slug Heart (MS-Heart, or Heart for short) is a new character introduced in Metal Slug Attack.

Character Summary

A new AI developed by the Regular Army, Heart is the operator of the TS-001 Tandem Slug. The Tandem Slug has a melee and ranged form; in its melee state, it charges at the front lines and bashes enemies with its massive fists. If this form takes too much damage, she detaches the melee components and turns into a ranged form, firing from both a rifle and cannon.

Her personality was based off MS-Alice's possible decodings, though this was before she gained self-awareness. As such, she is rather cold, calculating and does not understand the meaning of most words. Upon being hacked by White Baby, she gained self-awareness, but still retains her typical cold manner, albeit with an unusual attachment towards Tarma Roving.

While she appears much older than Alice, she is actually her younger "sister" since she was created after her.


Extra Ops

Due to Alice being damaged during a Martian attack, Heart takes command of Alice's unmanned division and leads the attack against Amadeus Syndicate forces. Prior to the attack, Alice communicated with Heart and told her to ensure the safety of her tanks.

Heart encounters White Baby and the Iron Fortress. In the ensuing battle, she loses a significant amount of her forces (much to Tarma's disgust), but manages to surround the two Amadeus AI with her remaining forces. White Baby hacks her, though she states that it is ineffective as she relinquished command of her forces as soon as she started and she can buy more bodies with the coins she acquired. She states that it was too fast, before realizing that she shouldn't have a concept of time. White Baby's hack caused her to become self-aware, and when Tarma arrives, she stutters and orders him to leave as her plans were thrown off with his presence. Tarma tells her that she has to withdraw her forces if he leaves. Embarrassed, Heart places Tarma on her before speeding back to base with her forces.

Later on she's conversing with a newly constructed "Slug Puncher" when the two hear Tarma yelling for his life in the distance and they decide to rescue him, despite knowing it is a waste of time. The assailant, Mizuna, puts up a good fight against the two, but is stopped by Yoshino before the fight escalates. MS-Heart tries to use the opportunity to attack, but Tarma stops her from doing so. MS-Heart analyzes Yoshino again and finds her too powerful to deal with, so she places Tarma on her again before speeding away.

Alice later returns to take temporary command of the AI division and the group is sent on a mission against the Ptolemaic cult, fighting a Sky Jupiter Queen variant which destroys most of the SV-001s. Midori arrives and destroys the Sky Jupiter Queen with her new weapon, having considered Alice to be part of her family. Alice is put into shock and later appears to "disappear", but MS-Heart tells Midori that Alice was simply shocked by her words and that she went into power conservation mode to make the journey back. She then wonders to herself how Tarma would take care of an AI (namely, her).

Following the operation against the Ptolemaic Army, Alice returns for more maintenance, so Heart temporarily resumes command of the AI division. She learns that a Regular Army base has been captured by the Rebel Army, and makes plans to recapture the base and save the nearby town. She is paired with Victoria for the mission, with her mechanical falcon Wade providing her with valuable reconnaissance to allow her to plan an attack. Her plan goes awry as it ends up being a trap, but Wade is able to drive the Rebel Army away with its "Firebird" mode. When Victoria suggests to chase the fleeing Rebels, Heart refuses, prioritizing the safety of the town first.

MS-Heart later does a simulation run with Midori, showcasing numerous weak points, but also pointing out to her that most of these are only effective in theory and not in practice. As they're talking, First Baby inexplicably arrives, and Midori grabs her new Slug Copter to assist MS-Heart. The Slug Copter is severely damaged by First Baby, and Midori is in danger of being injured, but MS-Heart is able to catch the young mechanic. After First Baby hesitates for a brief moment, MS-Heart tells Midori to quickly shut off the circuit she came from to dispel her.

While idling about with MS-Alice, the two AI soon detect a swarm of enemy bees heading towards their position. They use mass-produced Tail Slugs to defend the base, but all of them are destroyed by the swarm despite their effectiveness. Knowing that the base will be overwhelmed, Heart has Alice assist in evacuating the base's personnel while she stalls the swarm for additional time.

She later performs a joint operation with Alice, having gone additional maintenance and the latter joining in through an imprint.


Heroes Main Series Marco Rossi | Tarma Roving | Eri Kasamoto | Fio Germi | Trevor Spacey | Nadia Cassel | Ralf Jones | Clark Still | Leona Heidern
Spin-Offs Walter Ryan | Tyra Elson | Hero | Gimlet | Red Eye | Tequila
Mobile Roberto Nicola | Nathalie Neo | Alisa Stewart | Helton | Tilde | Nikita | Matilda | Amir | Whip | Heidern
Support Hyakutaro Ichimonji | Rumi Aikawa | Madoka Aikawa | Utan | Navel | Selina | Issenman Tarou | Eris | Hyakumantaro | Pupipi
Villains Main Series Donald Morden | Allen O'Neil | Abul Abbas | Rootmars | Doctor | Avatar of Evil | Invader King
Spin-Offs Allen Jr. | Oguma | Macba | Lt. Wired | Kanan | Hilde Garn
Mobile Unknown Alien | Victor | Ptolemaios | Anubis the Chained | Nanook
Instructors Sophia Greenville | Margaret Southwood | Riviera von Wittenberg | Maryell von Wittenberg | Cynthia Hartnett | Anne
NPC Announcer | POWs | Duke Koudou | Satiko Suzuki | Gerhardt City Civilians | Scott Amundsen Jr. | Miner | Genie of Lamp | Orca | President | Survivors | Fishman | Lumberjack | Sailor | Chinese Soldier
Crossover KOF Team | Battle Cats
Unused Phil Gene | Michiko Nakajima | Angry Man | "Achilles" | "Tabomba"
Metal Slug Attack
Regular Army Associates MS-Alice | Anna Wiese | Midori Schumann | Mello | Rita Lewinsky | Amber | Nikita | Reika Bradford | Louise | Gisee | MS-Heart | Ashley | Rocky | Growl | Jephet | Victoria | Claudia | Kanae | Howell | Phi | Elizabeth Mariani
Metal Device Project Perche | Ami | Molly | Menzel | Ulala | Maggie | Avvio | Quaith | Karen
Rebel Army Associates Rapid | Julia | Chloe | Izabella | Edda | Growth & Cline | Naomi | Alesha | Jane Doe
ACE Abigail | Dion | Romy | Kriemhild | Katalina
"Frozen Brigade" Beatriz | Vicky | Dolores
Blaze Brigade Grazia | Loretta | Norah
Allen Platoon Destrade | Huracan | Conny | Nantes | Padwah
Science Department Vita | Navy | Nova | Emma | Millefie | Sylfie | Fluffy
Arabian Army Shizuka | Aisha
Ptolemaic Army Rebellion Dragunov | Yoshino | Caroline | Veronica | Sisilia | Towa | Simon | Miharu | Chunyan | Owen | Sho | Lucy | Phoebe | Josette | Mizuna | Matilda | Little Lady Black | Svetla | Humphrey | Lithos | Yutong | Tatyana
Cultists Mira D. Genesis | Maria | Damian | Achetto | Sally | Cara | Oao-One | Sorceress
Secret Sect Anastasia IV | Believers | Beecham | Melvina | Anastasia I | Zahara
Space Army Martians Professor "Aionion" | Mars People Neo | Percier | Clone Abby | Clone Betty | Mars People Rangers | Ariadna | Gemini Twins | Halle | Bonny | Clario | Harriot | Code Marionette:Un | Pauline | Leone | Claris | Unsigned | Draco
Invaders Odette | Annette | Lydia | Nowan | Schwarz Metzelei | Fedeln Metzelei | Rillacle | Franke | Teleko | Bloom Metzelei | Odile | Bersek | Geweih Metzelei | Purple King | Barbeln | Biene Goldenes | Swordeist | Drache Goldenes | Eis Monstrum | Ai Agate
Independent Army Amadeus Syndicate White Baby | Alma | Iron Fortress | Valerian Bears | First Baby | Type:Ant-Lion
Red Goblin Society Scotia Amundsen | Red Goblin | Vatn | Jin | Aileen | Elena | Licht | Ichima | Wendy | Bushin Tenzan
Mummy Army Pharaoh | Cleopatra | Hemet | Arsinoe | Hathol | Sharifa | Ramal | Sekhat
Vampires Aswang | Agalia | Sharl | Grace
"World Military Corp." Kelly | Maya | Mirror Mantis
Mirage Circus Cocatrix | Bunny
Independents El Dorado | Elysion | Esther | Teresa | Minerva | Yang Dao | Otto | Yuki Tsuki Hana | Ido
Regular Army Vehicles, Slugs, and Artillery
Mechanized SV-001 | SV-001 Type-R | Slug Copter | Slug Flyer | Slug Sub | Astro Slug | Slug Gunner | Slugnoid | LV Armor | Walking Machine | Slug Mariner | Drill Slug | Bradley | Metal Claw | Forklift | Slug Mobile | Augensterm | Protogunner | Slug Digger | Slug Trolley | Slug Armor | Slug Gigant | Golden Slug | Slug Attacker | Slug Defender | Ball Slug/Drum Slug | Slug Square | TS-001 | Slug Rising/Slug Striker | Giant Copter/Copter Arms | Coil Tank | Ashley's Slug Flyer | Tail Slug | Patrol Slug | Pile Impact | "Phi's 3D Printer" | Slug Sniper
Animal SV-Camel | Elephant Slug | Ostrich Slug | Donkey Slug | Tiger Slug | Turtle Slug | Seahorse Slug | Felsteed
A.I. MS-Alice | MS-Heart | Phi
Transport Middle-Son 1986 | Borobune Slug | Motorcycle | Emergency Boat | Regular Army Helicopter | Landseek | PA33-21 Boat | RA-TTT
Other Middle-Son 1999 | SV-002 | Black Hound | Rootmars Slug | Regular Di-Cokka | Mr. Sluggles | S.A.M. Defender | 7000 Class Locomotive | Regular Iron Nokana
Wearable Parachute Drop | Scuba Gear | Jetpack | Drop Pack | Hoist | Metal Device | Doll | XA-01 Juggernaut
Stationary AA Machine Gun | Toy Union Cannon | Super Cannon