Abyssal Fleet

The Abyssal Fleet are the monstrous enemy ships and are the main antagonists in Kantai Collection series.

They are opponents faced by the player's fleet. The print spin-offs put forward the idea that they are an alien menace, and what's more are utterly hostile to humanity as a whole, plaguing the world's shipping lanes with unprovoked attacks.

While popular fan theory posits that the Abyssals, particularly its more humanoid members, are actually just turned Fleet Girls like ship-ships, hints in the Summer 2014/Aleutians-Midway Event add even more speculation fuel as it's obliquely hinted through their lines that the Midway Princess and the Carrier Princess are dark reflections of Akagi and Kaga, respectively. The 2014 Fall Event in Western New Guinea implies that Aircraft Carrier Water Oni is Shoukaku's dark side.

Normal Enemies

 * Destroyer I-Class
 * Destroyer Ro-Class
 * Destroyer Ha-Class
 * Destroyer Ni-Class
 * Light Cruiser Ho-Class
 * Light Cruiser He-Class
 * Light Cruiser To-Class
 * Light Cruiser Tsu-Class
 * Torpedo Cruiser Chi-Class
 * Heavy Cruiser Ri-Class
 * Heavy Cruiser Ne-Class
 * Light Carrier Nu-Class
 * Standard Carrier Wo-Class
 * Battleship Ru-Class
 * Battleship Ta-Class
 * Battleship Re-Class
 * Transport Ship Wa-Class
 * Submarine Ka-Class
 * Submarine Yo-Class
 * Submarine So-Class

Bosses

 * Armored Carrier Demon
 * Armored Carrier Princess
 * Floating Fortress
 * Anchorage Demon
 * Anchorage Princess
 * Escort Fortress
 * Southern Demon
 * Southern War Demon
 * Southern War Princess
 * Airfield Princess
 * Battleship Princess
 * Harbour Princess
 * Isolated Island Demon
 * Northern Princess
 * Aircraft Carrier Demon
 * Midway Princess
 * Aircraft Carrier Princess
 * Destroyer Princess
 * Aircraft Carrier Water Demon
 * Light Cruiser Demon
 * Battleship Water Demon
 * Harbour Water Demon
 * Anchorage Water Demon
 * Seaplane Tender Princess
 * Air Defense Princess