Siren

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The Siren is a boss fought in Joint Operation: Abyss Season 02.

Information[]

Developed jointly by the Morden Army and Atlan, this gigantic mecha boasts remarkably strong legs that takes it through mountains and valleys with ease. Inspired by the image of siren, the Atlantean mythical creature with a human head and a bird's body that wanders near reefs and whirlpools, luring lost ships into their traps. It resides on the floating island closest to the Eye of the Sea, serving as the final line of defense on the sea. It's an one-man army whose abdomen nurtures countless explosive "embryos" ready to charge at the enemy at its command.

Boss Synopsis[]

TBA

Boss Synopsis (Cursed)[]

TBA

Gallery[]

Bosses
Metal Slug	Tetsuyuki • Hairbuster Riberts • Tani Oh • Shoe & Karn • Iron Nokana • Hi-Do Mini-Bosses: Mini-Bata • Allen O'Neil
Metal Slug 2/X	The Keesi II / Iron Nokana MK II (X) • Aeshi Nero • Dragon Nosuke • Big Shiee • Hozmi • Rugname Mini-Bosses: Mosque Artillery • The Keesi II (X) • Karn (X) • Allen O'Neil • Dai-Manji
Metal Slug 3	Huge Hermit • Monoeye UFO • Jupiter King • Sol Dae Rokker • Rootmars Mini-Bosses: Twin Ohumein-Conga • Monoeyes • Hairbuster Riberts • Hi-Do • Rugname • Fake Rootmars • Clone Incubator
Metal Slug 4	Brave Guerrier • Toschka Dalanue • The Iron • Big John • Sea Satan • Amadeus Mother Computer Mini-Bosses: Mecha Allen
Metal Slug 5	Metal Rear • Shooting Ray • Screamer • Sand Marine • Avatar of Evil Mini-Bosses: Black Hound • Stone Turtle (unused) • Gaia Elephant • Ptolemaios (unused)
Metal Slug 6	Bull Drill • Iron Sentinel • Brain Robot • Elder Centipede • Invader King Mini-Bosses: Invader Controller • King's Cocoon
Metal Slug 7/XX	Iron Death Worm • Crablops • Destroyed Crablops • Fall Climber • The Union • Rebel Gigant • Kraken Mini-Bosses: Scrap Tower • Big Gate
Metal Slug: 1st Mission	Rebel VTOL • Rebel Train • Macba • Rebel Zeppelin • Electromagnetic Crane • Weapons Port Boss • Metal Strider Mini-Bosses: Facility Elevator • Macba • Rebel Truck
Metal Slug: 2nd Mission	Big Bertha • Terrain Carrier • Rebel Reactor • Macba • Rebel Submarine • Rebel Blimp • Tani Oh • Wired • Rebel Airplane • Metal Strider • Rocket UFO Mini-Bosses: Power Generators • Rebel Rocket • Hyakutaro
Metal Slug Advance	Formor • Emain Macha • Kaladgolg • The Keesi III • Cabracan Mini-Bosses: Allen Jr.
Metal Slug 3D	Spider-Bot • Underground Cruise Missile • Morden's Battleship • Morden's Castle • Lugus • Lieu Mini-Bosses: Parachuetruck • Mosque Artillery • Allen O'Neil • "Rebel Destroyer Ship"
Metal Slug Attack	Pharaoh's Arc • Ptolemaios • Ball Slug • Great Mother • Mars Gigantalos • K-O3 Coupled Armored Vehicle • Land Blowfish • Cyclobster • Slug Square • Zoni Doloma • Quadro Jumper • Denturion • D-Gu • Fortmeranian • Rock Mole • Giant Copter • Et A Omnis • Vortex • Digger Base • Crusty Legs • Armored Crawler • Queen Big Snail • 7000 Class Locomotive • Riviere Hyll • Metal Fusioner No.223 • Drum Slug • Mars Wolf • Sea Dragon • Tetsujin Squad • Sand Twister No. 1 • Gigantnoid • Dark Gate • Knight Tank • Impact Cannon • Dive Assault Cannon Andrew • Old Blood Beast • Omikami
Metal Slug: Awakening	Sphinx • Conga Lava Dominator • Apep • Moltar's Legacy • Steel Conga • Sherpa • Khepri • Gordos • Tarpu • Resheph • Gold Eye • Pharaoh • Earthcore Deity • Crystal Beast Centipede • Crystal Beast Conga • Laura • Cruiser Titan Submarine • Anta • Mecha Allen • Siren • Titan • Anke • Azag • Galoo • Sylrush • Refining Cauldron • Reaper • Caesarenes • Hairbuster Riberts - Charge • Hallelujah • Misha • Nakya • Eric McCanney • Dai-Manji • Jupiter King • Electro Fluid Concerian • Tail Needle Mini-Bosses: The Keesi II • Allen O'Neil • Iron Nokana • Metal Rear • Hellfire Bat King • Shabti • Black Hound Joint Operation: Volmes • Firefly • Genaro • Katherine • Silence • Mechanist • Six-Armed Machine Joint Operation Abyss S1: Berua • Meiruizige • Mech Hermit Crab • Machine Guard • Maat Joint Operation Abyss S2: Anta (Cursed) • Fist Fungus Beast (Cursed) • Cruiser Titan Submarine (Cursed) • Knight Conga (Cursed) • Siren (Cursed) • Titan (Cursed) • Firefly (Cursed) • Cetus (Cursed) Others: Dr. Neander • Rift Crystal Beast • Calamity Crystal Beast • Calamity Snake • Eye of Calamity • Treasure Bowl Flashback Mode: Hairbuster Riberts • Tetsuyuki • Mini-Bata • Mosque Artillery • Green Ohumein-Conga • Red Ohumein-Conga • Huge Hermit • Big Shiee • Tani Oh • Big John • Hi-Do • Bombardier Captain • Dragon Nosuke
Mobile Games	Rocket Control Room • Unknown Alien • Hellfire • Spiderbot • Cyclops • Mega Laser Turret • Mars Battle UFO • M-32 Water Carrier Plane • Kourai • Alien Floating Structure
Irem's D.A.S. Universe	Chi Un-D

Enemies and Bosses
Metal Slug: Awakening
Heroes	Mainline	Marco Rossi • Tarma Roving • Eri Kasamoto • Fio Germi • Trevor Spacey • Nadia Cassel • Leona Heidern
	Newcomers	Lyla • Eva Glenn • Haran • Scarlett • Gru Kang • Saya • Kukik • Eiserner • Joe • Lilith • Ame • Dong Huanlong • Ilum • Freyja • Eske • Aurora • Martina • Shadow • Horae • Phoenix • Crimson • Li Xuanlang
	Crossover	Arena of Valor: Violet The King of Fighters: Kyo Kusanagi • Mai Shiranui Honor of Kings: Alessio • Sun Shangxiang • Marco Polo
NPC	Andrew Town	Victor • Asuka • Mia • Lambert • Gadd • Crow • Lucas • Club Butler • Club Manager • Rift Guide • Andre • Eve • Shirley • "Elaine" • Eileen • Salem • Ace • Eugenia • Utan
	World Adventure	Amir • Elia • Celine • Hasan • Nefer • Hachoo • Dr. Dee • Laura • Neso • Ajax • Theo • Hilo • Ishtar • Uthar • Chad • King Harold • Wizz • Eric McCanny • Niord • Mimir • Ymir • Caroline • Odin • Lettice Ivan • Igor • Bluebird
	Returning	Rumi Aikawa • Madoka Aikawa • Hyakutaro Ichimonji • Parker • President Marx • Djinn • Sachiko Suzuki • Rita Kanikoja
	Other	Bucara • Charles • Olive • Meituan Mascot
Villains		Donald Morden • Allen O'Neil • Abul Abbas • Pharaoh • Shabti • Tarpu • Sid • Katherine • Silence • Mechanist • Dr. Neander • Anke • Galoo • Caesarenes • Misha
Factions		Regular Army • Rebel Army • Arabian Infantry • Far East Division • Ptolemaic Army • Mummy Army • Cavemen • Kemut Posse • "Atlan Army" • Dolphins • Armerian Army • Mad Serpents • Ice Pole Alliance • Mechanian Alliance • Concerians • Soya Mafia
Locations		Andrew Town • Kemut • Atlan • Armer • Vitins Continent • Solar System
Modes		World Adventure • Treasure Dig • Arcade Carnival • Hot Pursuit • Joint Operation • Ultimate Arena • The Maze • Prime Showdown • Djinn Range • Club • Frenzy Showdown • Shootout Challenge • Abyssal Rift • Extreme Championships • Endless Trial • Abyssal Cruise • Phantasmic Geocenter
Mini-Games and Event Modes		Red stop, green go • Mecha Clash • Underwater Combat • Submarine Hunt • Joyful Treasure Basin • Super Weapon Battlefield
Other		List of Metal Slug: Awakening Cores • Skins
Humans	Regular	Rebel Infantry • Arabian Infantry • Well Diver • Myopic Researcher • Lava Specialist • Vanguard Burrower • Driller Engineer • Special Forces • Far East Soldier • Bonesaw Doctor • Whitebeak Gunner • Mutated Morden Army
	Elite	Super Soldier • Bayonet Soldier • Arrogant Scientist • Machine Gun Squad Captain • Bombardier Captain • Camel Cavalry • Demolition Engineer • Skyfire Guard • Flame Throwing Man • Super Alloy Ninja • Skycourt Guard • Bluefeather Warrior • Cloud-Piercing Archer • Vulture Cavalry • Levitating Knight
	Boss	Tarpu • Katherine • Allen O'Neil • Laura • Caesarenes
Mecha	Regular	Di-Cokka • Girida-O • MV-280B • MH-6S P.M. • Flying Tara • Surveillance Camera • Patrol Drone • Mouse Auto Drill • Airship • Claw Unit • Hover Vehicle • Wall Drone • Steel Conga Jr. • New Godokin City Cars • Bradley Ver.P.M • Mini-UFO • Green Light UFO • Bouncing Mecha • Cat-Eared Robert • Cat-Shape Drone
	Elite	LV Armor • M-15A • T-2B Melty Honey • MH-6S • Magnetic Tank • Armed Armadillo • Stamping Driller • Heavy Metal Mecha • Quad-pedal Mobile Cannon • Auto Mech Artillery • Cyclone Wheels • Runaway Train • Silver Lion • Morden Bus • Nop-03 Sarubia • HMG Unit • R-Shobu • Mech Warrior • Flying Mech Orb • Iron Iso • T-2B Melty Honey - Air • Warning Warrior • Sarubia Mobile Cannon • M-15A III • Ice Fang Bully • Blizzard Wolf • Ice Spike Whale • Esibar
	Boss	Steel Conga • Parachuetruck • Black Hound • Genaro • Big John • Cannon Hermit Crab • Volmes • Silence • Firefly • The Keesi II • Metal Rear • Dragon Nosuke • Tani Oh • Tetsuyuki • Missile Artillery • Mini-Bata • Iron Nokana • Big Shiee • Hairbuster Riberts • Mechanist • Six-Armed Machine • Mech Hermit Crab • Machine Guard • Anta • Submarine • Siren • Titan • Cetus • Azag • Cauldron • Reaper • Hairbuster Riberts - Charge • Hallelujah • Misha • Nakya • Eric McCanny • Tawan • Jupiter King
Monsters	Regular	Fiery Lizard • Flying Killer • Chowmein-Conga • Wall Bug • Man Eater • Hell Bat • Sasquatch • Furious Red Bee • Hell Worm • Fluorescent Worm • Martyr Slug • Big-Bellied Spider • Overweight Beetle • Lava Crab • Mein-Conga • Monkey Soldier • Fungus Fragrantia • Patrol Echinus • Atlan Warrior • Fishfolk Gunner • Argonaut Sailor • Sea God Guard • Bluefin Swordsman • Ammonite Squid • Turtle Turret • Titan Arum • Silverwing Assassin • Frost Conga • Frost Worm • Frost Lizard • Martian
	Elite	Bat King • Mutated Moth • Annoying Mosquito • Ninja Mantis • Giant Caterpillar • Baby Centipede • Poison Bomb Flower • Mutated Ant • Desert Scorpion • Lava Turtle • Monkey Officer • Fist Fungus Beast • Knight Conga • Hexapod Enforcer • Volt Soldier • Fighter Conga • Armer Eagle • Frost Bat • Martian Walker • Spit Frog • Ice Fang Beast • Crimson-Eyed Bat
	Boss	Conga • Hellfire Bat King • Ohumein-Conga • Sherpa • Apep • Moltar's Legacy • Khepri • Gordos • Centipide Elder • Crystal Beast Conga • Crystal Beast Khepri • Electro Fluid • Tail Needle
Mythics	Regular	Dummy Mummy • Hunged Mummy • Dog Mummy • Mini Djinn • Skycourt Overseer • Skycourt Cleaner
	Elite	Falconman Statue • Cave Warrior • Cave Shaman • Serpent Priest • Black Jackal Jar • Black Cat Trap • Serpentman Guard • Bug Master Mummy • Falconman • Executioner Mummy • Steel Jackal • Jackal Warrior • Mummy Archer • Skycourt Claw • Skycourt Wing
	Boss	Pharaoh • Sphinx • Gold Eye • Resheph • Shabti • Earthcore Deity • Berua • Meiruizige • Maat • Anke • Galoo • Sylrush
Uncategorized	Regular	Mole • Bomb Kid • Counter Disc
Uncategorized	Boss	Dr. Neander • Martian Helicarrier
Weapons
Slugs		SV-001 • SV-Camel • Mobile Express • Drill Slug • Sonic Alpaca • Heavy Mecha • Powerball Drive • Towering Reno • Crimson Warblade • Shatter Ship • Transition UFO • Slug Flyer • Slug Mariner • Astro Slug
Mechs		Wizz • Hall
Special Weapons		Heavy Machine Gun • Rocket Launcher • Shotgun • Flame Shot • Laser Gun • Iron Lizard • Blizzard
Weapon Classes		HMG • Gatling • Flame Shot • Bazooka • Heavy Sniper Rifle • Freeze Gun • Combo Shotgun • Boxing Gun • Saw Launcher • Bow • Laser Gun • Fission Gun • Chainblade Rifle • Grenade Launcher • Plasma Cannon • Vortex Forcefield Cannon • Dual-Wielding SMG • Mars Turret Gun
Powerups		Ice Bomb • Drone • Turrets • Transformations