Sector 51

Season 2 new characters part 2 (SPOILER!)

One of two new Zodiacs introduced in the first part of the season 2 finale "return of Sagittarius", Aquarius is a Hydroplasmodian, a subspecies of the Plasmodian race (same as Blobulus from the first episode) who differ from their cousins by having bodies made of water instead of slime as well as having two eyes instead of one.

Another one of two new Zodiacs introduced in the season 2 finale, Gemini comes from a race of aliens known as Duosapiens who possess two heads in addition to being able to split into two separate beings.

The eyes of Ishtar are a genetically-engineered race of creatures created by the Annunaki to scout out planets to prepare for invasion. they are organic beings piloting mech suits. if they look familiar to you, it's because one of them appeared in the Animal X episode "A nightmare on flatwoods" as the Flatwoods monster of West Virginia. a bunch of these appear in the second part of the "Return of Sagittarius" two-parter aboard the space colony known as New Nibiru.

The leader of the Annunaki empire, Ishtar is an intergalactic tyrant bent on galactic domination. as it turns out, Eterius/Sagittarius has been spending his days in hiding aboard the pyramid-shaped space colony New Nibiru this whole time helping Ishtar prepare for the conquest of Earth to make it a new home for the Annunaki refugees who have survived the destruction of their home planet Nibiru. not only that, but he is also the father of Innana, Eterius's late wife and he is just as out for blood as his son-in-law is.

One of two high-ranking female Sector 51 agents who serve as bodyguards for Alpha (in addition to sharing the same Nanotech immortality as Alpha) earning them the nickname of "Alpha's angels" Beta is the more cold, serious one of the two and has the closest relationship with Alpha willing to die for Sector 51's leader. her uncle Siber is actually a member of the council of planets.

Another one of two high-ranking female Sector 51 agents who serve as bodyguards for Alpha (in addition to sharing the same Nanotech immortality as Alpha) earning them the nickname of "Alpha's angels", Gamma is the less serious and more hard-headed one of the two who loves nothing more than to ram bad guys with that thick skull of hers, a trait she shares with the zodiac Aries. and that's no coincidence, as Gamma is Aries's older half-sister hailing from a sub-race of the Ramosapien species known as the Bharamosapiens, which have horns that portrude out to the sides in contrast to the horns of regular Ramosapiens which curl upwards.

(REAL SPOILER DOWN BELOW, YOU HAVE BEEN WARNED)

After remaining anonymous for two whole seasons while up in space representing the human race on the council of planets, the immortal head of Sector 51 finally shows his face in the 2-parter "the return of Sagittarius" when he along with Beta and Gamma arrive on earth to help stop the Annunaki invasion led by Eterius and Emperor Ishtar. turns out, the Annunaki refugees aboard the space colony New Nibiru have a beef with Alpha (especially Ishtar) since he was the one who pressed the big red button that destroyed Nibiru and doomed the Annunaki to planetary genocide. Alpha isn't a horrible person, he was just a misguided soul who believed what he did was for the greater good and ended up regretting that decision big-time. this is why he has remained anonymous while communicating his sector 51 agents on Earth all this time while he was up in space, because he knows if he did end up showing his face he'll be forced to face the consequences of his actions. he is capable of manipulating Nanotechnology gifted to him by his loyal friend the Grey alien Omega which also gave him immortality, oh and he was also the farmer that found the UFO in Roswell back in the day that established mankind's first contact with Extraterrestrials.