I got the following off of SharaX's Tumblr. I will ask SharaX permission before I post any real chapters. All of the pictures here also belong to SharaX. *Gives you a breadstick*

----------Cider----------

Cider can be selfish and demanding, and is the oldest of the three. He adores attention, and his leader-like personality rivals Chronos's. Though his humor can seem rude, he can also be a gentleman and looks out for his youngest brother Zephyr. He loves casinos and has a problem with gambling, but he's quite good at it. He also tends to pickpocket, and has been teaching Zephyr refined methods, to Chronos's opposition. His instrument of choice is the Koto.

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----------Chronos----------

Chronos is a bit more mysterious than the other two. He's a lyricist and takes his work seriously, and his writing can sometimes be cryptic or confusing. It's almost as if he knows the real meaning behind a song before it's even written, which may have something to do with his knowledge of time. He tries to keep Cider's ego in check while being a role model for Zephyr. Chronos often works alongside Seris and Hex raiding spaceships & completing assassination jobs. They will usually split the loot and Chronos brings back items for Shara to resell on Space Stations. Seris and Hex have their own ship, but will occasionally return with Chronos to "chill" on Shara's ship. Cider is not fond of Hex and they two often mock each other. Hex has an unsettling interest in Zephyr's affliction and Chronos's relationship with Hex is uneasy because of it, as he threatens him to "keep his distance from Zephyr." His instruments of choice are the Violin and Cello. 

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----------Zephyr----------

Zephyr is the youngest of the brothers. He is sensitive, affectionate and the liveliest of the three. He enjoys spending time with Chronos and admires his ability to write lyrics, and looks up to Cider for his confidence and hidden compassionate nature. Zephyr is determined to prove he can be independent, but always finds himself turning to his older brothers for guidance. His instrument of choice is the Celtic Harp. After months of work and personality design, Zephyr's Voc (Vocal entity) was suddenly erased when the VST his voice was created in corrupted itself. In an effort to restore his Voc and personality, a backup was loaded, though it contained several glitches and constantly crashed the VST. Eventually it was overwritten with a repaired Voc, though the corrupted and restored versions still existed within each other. This created two separate personalities: The corrupted Xephyr and restored Zephyr. Due to the nature of this early corrupted Voc, Zephyr has a few triggers that cause this alt personality to appear:

*Dimly lit areas/Areas with no light - Because Xephyr was erased once, he never want to return to the emptiness of non-existence. If Zephyr is left in the dark for too long, his alt will assume control as a defense against this, and will become aggressive in fear of being deleted again.

*Fear - If Zephyr's fear is high enough, Xephyr will assume control to protect him regardless if the area's dark or well-lit, which is why Cider & Chronos will focus to keep Zeph calm in stressful situations.

Chronos wears his clock sash (Hourglyph) as a source of light for Zephyr, so he'll never have to worry if he's out late with him in the dark (note Zeph's fear level will always overwrite the light source if it's high enough). The Hourglyph serves a different purpose, but Chronos doesn't know that quite yet.

----------Hex----------

Hex is allied with Chronos on a business level (until future events with Xephyr arise) and often works along side Seris.

Seris is also a mercenary, but his nature is diplomatic and acts more like Hex's advisor while not in combat.

Corporations could recognize high valued mercenaries based on their rank (which is earned through their service and the jobs they take). Chronos's rank will be slightly lower than Hex's, and Seris's rank will be lower than Chronos's.

Also Hex's eyes are a bit different. Hex is currently in slight "Feral" mode. Here's some info:

Disciplined - The most tame mode, their daily basis mood.

Feral - When very agitated, wanting to prove a point, threatened etc. Thoughts are more irrational and is associated with strong emotion.

Bloodthirsty - Only Xephyr can currently reach this mode. Thoughts are extremely irrational. Judgement is so clouded that recognizing others around oneself becomes near impossible. Returning from this mode is very difficult.

----------SharaX----------

(Since I couldn't find a description to copy & paste [Yes, I've been copy & pasting everything so far{'Cuz I'm lazy}, making slight changes] I winged it on this XD)

SharaX, also known as Shar or Shara, is the head of the Undertronic group and creator of Cider, Chronos, Zephyr, and Xepher. She often has two Pumpkaboo-like lanterns following her, acting as guards and her Pokémon friends. The glowing one will glow brighter when Shara is happy, and the injured one will start to produce black smoke whenever Shara is heavily annoyed or angry. Her eyes are similar, their light growing dull or brightening depending oh Shara's mood.

Shara is almost always happy & cheerful, but she can also be very stern & commanding. She treats her workers with kindness and is never seen fighting or rude. She cares for her creations and does her best to keep them safe and will often hesitate if sending them on dangerous missions.

Though she is nice and kind, she is a heavily wanted renegade throughout the multiverse for making living beings out of computer software. Because of this, she is rarely seen off of her ship. But when she has to leave, she is always undercover.

Shara's favorite food is a breadstick and will sometimes go undercover to Olive Garden or send Cider there to get breadsticks. SharaX also has 6 cats. Beings of nature respect her and are one of the only things outside of her ship that will not harm her.

SharaX has hidden friends throughout the multiverse, often other Sans'. She rarely contacts them but they are always willing to help. Her closest allies are Dancetale Sans and Underswap Sans.

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Welp, that's it for now! *Flings you a breadstick topped with breadsticks with a side of breadsticks* And I'll update these if SharaX updates them on her Tumblr. Other than that, all I have to do is wait!