Here they are! The E-Series! I've worked on these for a while now. Some you have seen, some you have not. They are all siblings save for Ea who is the mother. Going from back to front:
Ven (E1): Male. Ven is the oldest sibling of the E-Series, and was the first to be experimented on. On the surface, he seems to be a hippie womanizer, relaxed and chill almost all the time, and is quick to try to get in bed with thick Pokemon and humans alike. Inside, he harbors a lot of negatively for those who has hurt him. His enhanced strength and speed, more pronounced blades, and ability to skip charge ups on things like Solar Blades makes him the second strongest of the family in raw power.
E8 (E8): Male. E8 is the third oldest of the siblings, and the "success" of the E-Series project. He is able to almost instantaneously about to transform into all of the Eeveelutions at will, all with different movesets. He also is able to transform into a nineth evolution yet to be seen. He is stoic, calm, and intelligent, being trained to be a a gift in combat situations. Although he lacks some emotional understanding, he deeply cares for his family and friends, and is one to always repay his favors. He will eat anything.
Midnight (E): Female. Midnight is the second oldest of the siblings, and is the tank of the group. She's kinda the punk and or goth of the group. She is very laidback and chill, a bit flirtatious, and pretty sarcastic. She actually lives with her former handler now lover, and has had kids of her own. However, just because she doesn't battle much anymore and put on a bit of weight, doesn't make her any less of a wall.
Berri (E5): Male. Berri is the second youngest of the siblings, and is an Electric/Fire type. Being a Flareon Jolteon hybrid, Berri is incredibly energetic. He is friendly, almost overly so, and is quick to greet or play with any person with enthusiasm. The energy he can produce is absurd, his former handlers even noting he could power a power plant on his own if pushed. His speed makes him extremely hard to track, making him a deadly sweeper.
Viole (E3): Male. Viole is the fourth youngest, and is a Fairy/Dark type. He is brash, blunt, and seemingly uncaring. But, a lot of this stems from the inner conflict he has with his Dark type nature that is not natural to him. He GREATLY dislike what the scientists have done to him, and harbor s a dislike for himself. Deep down, however, he actually is quite caring, and will step up to protect those who are being used. He is aggressive and oppressive in battle, his stats being warped into being that of a speedy physical attacker.
Siren (E4): Female. Siren is the third of the siblings. She is a tsundere through and through, and is somewhat attention seeking and pouty. But, she is kind on the inside and is quick to help people out when they aren't looking. Siren's special ability and power lays in her voice, being like the sirens of legend and able to control people with it. She loves all kinds of music, and often loves to clean as a de-stresser.
Queen (E2): Female. Queen is the fourth oldest, and is an Ice/Flying type. Queen is very distant and, well, cold to most, her face usually neutral and speaking bluntly when she needs to. Very unique to the E-Series, Queen is basically a "cold vampire", able to suck the cold from other. She doesn't do well in hot environments, and would die if her temperate got too hot. She is a fashionista, making clothes for Pokemon and humans alike. She own stands on her back legs and wears human-like clothing.
Ea (E0): Female. Ea is the mother of the E-Series, and was experimented on long before the beginning of the E-Series project. A reference to Red's Eevee from the manga, she was experimented on by Team Rocket to transform into the first three Eevolutions, but later acquired the other forms over time. Ea IS the mother of the E-Series, but originates from what is know as the Violet Timeline, a timeline that runs parallel to the current one. Ea is sweet, sassy, and has a youthful air to her. She cares for this E-Series greatly, seeing them like her own, but is a bit awkward around some of them due to how the original E0 treated them. She is decently flirtatious to Pokemon and humans alike, and can do the swirl eyes like Esper when flustered.
Esper (E7): Female. Esper is the youngest of the siblings, and is a Psychic/Normal type. She is quite timid and anxious, barely coming out of her room and usually found with one of her siblings when she's in public. She harbors a lot of self-esteem issues thanks to E8 being the success right after feeling she didn't excel at anything, but does not hate him. Instead, she tries all she can to help him out, wanting to be "useful" to him. He and others though are slowly helping her realize she is a lot more than what she believes she is. She plays video games, draws art, and messes with electronics, being quite well versed in all of these things. She also is a great cook. In battle, her ability Psionic Bulk allows her to take less damage from super effective hits and much added bulk makes her a dangerous DPS tank.
And there you go! A LOT of info for the group! Hope you enjoy them~