It's a huge, shiny metal egg with metal ridges around it. Editions don't change it.
Attacks
Image
Description
Four Direction Lasers
The Mysterious Ship has only one attack - shooting lasers in four directions every five seconds.
Encounters
It is only encountered once at the end of Comet Chase. It has 100000 health and gives 75000 points and an Atomic Powerup after death. It attacks with lasers in four directions every five seconds. It will also spin a lot as it moves around the screen. It's weak against the Lightning Fryer and it has no strengths.
In Chicken Invaders Universe, it will emit a short warning before its first attack and will attack with lasers in up to six directions, depending on difficulty.
Trivia
It has been rumored quite a few times that the Mysterious Ship is a reincarnation of the Mother-Hen Ship (CI2), proven by the fact that the final phase of the boss was a metallic body shooting 6 lasers directly at the player. Furthermore, since MHS was made by the Chickens, it might bring up the suspicion that the Chickens partially rebuilt it after its destruction in Wave 20 (in Revenge of the Yolk). However, MHS appears in Ultimate Omelette as a typical giant egg, and not as a ship made of metal.
Also, to this day, it has not been yet confirmed by InterAction Studios if the Mysterious Ship is actually a reincarnated version of MHS.
Strategy
When the Mysterious Ship slows down, try to not be above/below/next to it, so you don't get killed by its lasers. It's better to stay near its corners, as the lasers it shoots taper out. Its fire is strictly periodic, so once you learn its pattern, it'll be easier for you to defeat it.
Ion Blaster Gift • Neutron Gun Gift • Laser Cannon Gift • Vulcan Chaingun Gift • Lightning Fryer Gift • Plasma Rifle Gift • Utensil Poker Gift • Atomic Powerup