Event Bosses
These are powerful NPCs that occassionally appear in Sios, requiring the combined might of several airships to sink successfully. Some are so powerful that they will resurrect and have to be killed multiple times.
Prizes (in the form of attractive rare items) are usually awarded to the lucky and brave captains who manage to sink these menaces.
Santa vs Mechakaiju
Date sighted: 24 Dec 09
Steampowered Santa
Mechakaiju
Avian Monsters
Date sighted: 28 Nov 09 (discussion thread)
Roc Flappy
(for levels <51)
Thunder Flappy
(for levels 51-80)
Phoenix
(for levels 81-100)
Dreadactyl
(for levels 101-125)
Sky Terror
(for levels 126+)
Halloween Terrors!
Date sighted: 31 Oct 09 (discussion thread)
Flying Pumpkin
(for levels <51)
Phantom Pumpkin
Pumpkin Horror
(for levels 81-100)
Pumpkin Terror
(for levels 101-125)
Pumpkin Overlord
(for levels 126+)
UFO Invaders
Date sighted: 26 Sep 09 (discussion thread)
UFO Scout
(for levels <51)
UFO Harvester
(for levels 51-80)
UFO Abducter
(for levels 81-100)
UFO Terrorship
(for levels 101-125)
UFO Mothership
(for levels 126+)
Terrors from the Deep
Date sighted: 22 Aug 09 (discussion thread)
Abyssal Manta
(for levels <51)
Abyssal Coelacanth
(for levels 51-80)
Abyssal Kraken
(for levels 81-100)
Shadow Serpent
(for levels 101-125)
Deep Terror
(for levels 126+)
Phantom Horde
Date sighted: 25 Jul 09 (discussion thread)
Ghost Pirate
(for levels <51)
Phantom Destroyer
(for levels 51-80)
Infernal Cruiser
(for levels 81-100)
Phantom Warship
(for levels 101-125)
Phantom Fort
(for levels 126+)
Rogue MAWs
Date sighted: 27 Jun 09 (discussion thread)
Exion
(for levels <51)
Devastator
(for levels 51-80)
Valkyrie
(for levels 81-100)
Durandal
(for levels 101-125)
Dullahan
(for levels 126+)
Mercenaries of Death
Date sighted: 23 May 2009 (discussion thread)
Mercenary Battleship
(for levels <51)
Mercenary Warship
(for levels 51-80)
Death Scythe
(for levels 81-100)
Grim Reaper
(for levels 101+)
Frizon Invaders
Date sighted: 28 Mar 09 (discussion thread)
Frizon Reaver
(for levels <51)
Frizon Dread Reaver
(for levels 51-80)
Frost Kraken
(for levels 81-100)
Frost Colossus
(for levels 101+)
Monsters Rampage
Date sighted: 28 Feb 09 (discussion thread)
Fire Ravon
(for levels <31)
Blood Ravon
(for levels 31-60)
Hell Hound
(for levels 61-90)
Cerebus
(for levels 91+)
Minos Rampage
Date sighted: 24 Jan 09 (discussion thread)
Minos Grunt
(Picture Needed)
(for levels <31)
Minos Trooper
(for levels 31-60)
Minos Rampager
(for levels 61-90)
Minos Omega
(for levels 91+)
Christmas Monsters
Date sighted: 25 Dec 08 (discussion thread)
Pine Treant
(Picture Needed)
(for levels <31)
Evil Snowman
(for levels 31-60)
Zombie Reindeer
(for levels 61-90)
Santa Slave Galleon
(for levels 91+)
Avian Terrors 2
Date sighted: 29 Nov 08 (discussion thread)
Roc Flappy
(for levels <31)
Thunder Flappy
(for levels 31-60)
Phoenix
(for levels 61-90)
Dreadactyl
(for levels 91+)
Halloween Monsters
Date sighted: 1 Nov 08 (Halloween Event) (discussion thread)
Flying Pumpkin
(for levels <31)
Phantom Pumpkin
(for levels 31-60)
Pumpkin Horror
(for levels 61-90)
Pumpkin Terror
(for levels 91+)
Lunar Invasion
Date sighted: 13 Sep 08 (Mid-Autumn Festival Event) (discussion thread)
Crescent Moon
(Picture Needed)
(for levels <31)
Quarter Moon
(Picture Needed)
(for levels 31-60)
Full Moon
(for levels 61+)
Phantom Fleet
Date sighted: 16 Aug 08 (discussion thread)
Ghost Pirate
??? HP (for levels <31)
- Phantom Cannon 670-821
Phantom Destroyer
??? HP (for levels 31-60)
- Phantom Guns 1136-2005
The Infernal
??? HP (for levels 61+)
- Infernal Cannon 6237-17423
LOL Cats
Date sighted: 19 Jul 08 (discussion thread)
Monorail Cat
8,000,000 HP (for levels <31)
- Lazors 560-885
Laser Cat
50,000,000 HP (for levels 31-60)
- PEW 4050-6371
Fat Cat
80,000,000 HP (for levels 61+)
- Muffin 7980-15815
Avian Terrors
Date sighted: 28 Jun 08 (discussion thread)
Roc Flappy
8,000,000 HP (for levels <31)
- Razor fall 104-303
- Beak crush 432-519
Thunder Flappy
50,000,000 HP (for levels 31-60)
- Thunder wave 1083-1768
- Static charge 2488-4385
Phoenix
80,000,000 HP (for levels 61+)
- Burning skies 3602-8884
- Fire dance 6588-10663
Rogue MAWs
Date sighted: 24 Apr 08 (discussion thread)
Exion
5,000,000 HP (for levels <31)
- Pulse blast 696-750
Devastator
30,000,000 HP (for levels 31-50)
- MRL 2492-3821
Valkyrie
60,000,000 HP (for levels 51+)
- Great Valkyrie Lance 7801-15996
Captain Anne
Date sighted: 10 May 08 (discussion thread)
Developer-controlled ship (Scarlet Orca)
1,250,350 HP
- Power Claw (melee)
- Fireflash bombs (missile)
- Sidewinder missile (missile)
- Aqueus Cannon
Abyssal Monsters
Date sighted: 19 Apr 08 (discussion thread)
Abyssal Manta
3,000,000 HP (for levels <31)
- Deep sonar 250-307
- Hull breacher 436-495
Abyssal Coelacanth
20,000,000 HP (for levels 31-50)
- Thermal blast 1001-1377
- Exo hull 2381-3015
Abyssal Kraken
50,000,000 HP (for levels 51+)
- Hadal fall 769-6333
- Death grip 6172-6244
Dragons
Date sighted: 5 Apr 08 (discussion thread)
Venom Drake
3,000,000 HP (for levels <31)
- Acid breath 231-279
- Venom claws 304-518
Storm Drake
20,000,000 HP (for levels 31-50)
- Lightning burst 917-1434
- Lightning lash 928-2968
Doom Dragon
50,000,000 HP (for levels 51+)
- Plague swarm 4231-6586
- Doom smash 7044-8002
Fong Pei
Date sighted: 29 Mar 08 (discussion thread)
Player-controlled ship (Prophet Fong)
112,500 HP
- 6x Hand of Justice (missile)
- 2x Chainsaw Blade (melee)
Nemesis War Fortress
Date sighted: 15 Mar 08 (discussion thread)
Shield Generator
2,000,000 HP (for levels 5-30)
- Point Defense Gun 558-747
Weapons System
10,000,000 HP (for levels 31-50)
- Defense Missiles 1982-2796
Nemesis War Fortress (Main body)
30,000,000 HP (for levels 51+)
- War Cannon 19856-22333
Phase Bats
Date sighted: 8 Mar 08 (discussion thread)
Phase Bats Swarm
2,000,000 HP (for levels 10-30)
- Crippling Sonar 780
Giant Phase Bats
10,000,000 HP (for levels 31-50)
- Death Sonar 2700
Phase Bat Monarch
20,000,000 HP (for levels 51+)
- Doom Sonar 9000
Golden Dragon
Date sighted: 9 Feb 08 (Lunar New Year Event) (discussion thread)
88,000,000 HP
- Flame Breath 1545-1726
- Golden Blast 4446-4711
Frost Dragon
Date sighted: 24 Dec 07 (Christmas Event) (discussion thread)
12,000,000 HP
- Icicle Spray x 3 999 x 3
- Artic Blast 1224-1278
- Frost Breathe 1725-1790
Leviathan
Date sighted: 8 Dec 07 (discussion thread)
11,000,000 HP
- Sonic Blast 1080-1197
- Dagger Tooth 811-1121
Bat of Doom
Date sighted: 3 Nov 07 (Halloween Event) (discussion thread)
8,130,000 HP
- Pumpkin Cannon 447
- Carrion Swarm 376
Mirage Fortress
