It's a huge purple jellyfish with a Chick on top of it, which has implanted a mind control machine on it.
In the Christmas edition, the Chick is covered up with a Christmas hat, and two Chicks (as gingerbread cookies) are behind it. In the Halloween edition, it doesn't change at all.
Attacks[]
Image
Description
Straight Neutrons
Fires red neutrons to the left out of its tentacles four times.
Head Dive
Dives to the left and spawns 8 Jellyfishes, taking up either the top, center or the bottom of the screen.
Spread Neutrons
Fires red neutrons out of its tentacles in different directions eight times.
Encounters[]
It's encountered only once at the end of the Epsilon Thalassus: Artifact Recovery Mission chapter. There, it has 120000 health. After dying, it gives 100000 points, 12-15 Coins, and an Atomic Powerup.
Its pattern isn't very complicated. First, it arrives from the bottom of the screen and uses Straight Neutrons. After that, it swims up, and reappears from the right side of the screen, performing the Head Dive attack. After it swims to the left, it reappears from the right side of the screen, and performs the Spread Neutrons attack. Its pattern ends with it swimming up, and reappearing from the bottom of the screen. It will then perform the Straight Neutrons attack again. A Satellite is summoned at the beginning and at the end of the fight. It is weak to the Lightning Fryer and it has no strenghts.
Strategy[]
Focus fire on the Chick that's controlling it, as that is its weak point. Projectiles that hit the weak point will deal 25% more damage.
It's better to move out of the Jellyfishes it spawns' way, as they aren't worth killing.
If you have problems with avoiding the Spread Neutrons attack, you can retreat behind the Jellyfish King. You will be safe from it here.
Keep in mind that the tentacles themselves can't hurt you.
Trivia[]
Terror from the Deep is currently the only boss in the series that has a weak spot.
This boss battle are parodying the Taito's shoot-em-up game Darius.
Ion Blaster Gift • Neutron Gun Gift • Laser Cannon Gift • Vulcan Chaingun Gift • Lightning Fryer Gift • Plasma Rifle Gift • Utensil Poker Gift • Boron Railgun Gift • Photon Swarm Gift • Positron Stream Gift • Hypergun Gift • Riddler Gift • Corn Shotgun Gift • Atomic Powerup