Toph Beifong is an earthbending master, one of the most powerful of her time, and the discoverer of metalbending. Blind since birth, Toph was constantly treated condescendingly because of her visual impairment, particularly by her overprotective parents, Lao and Poppy Beifong. Upon discovering badgermoles, earthbending animals who are also blind, she learned how to use earthbending as an extension of her senses. This gave her the ability to "see" every vibration that passes through the ground.

Best Earthbender, Melon Lord!

Energetic Omnic who loves to spread positivity.

XTale!Sans (better known as Cross, or Cross!Sans, or simply XSans) is a major character of the XTale and comic and Underverse, where he serves as the series' anti-hero. In XTale X, XTale!Sans was a trainee for the royal guard who began experiencing issues related to his code; which is actually relatable to The X-Event's cause.

Cross!Sans, XTale!Sans, XSans, The X-Event, X.

Venti has a somewhat recalcitrant, carefree, and playful attitude as well as a liking to rhyming in his speech. He sees a particular worth in music to the point where he names his lyre.

Venti wears a frilly white top with a corset for the midsection, along with teal shorts with gold embroidery, a matching teal cape held together by a deep blue and gold bow. He also wears white stockings with three gold diamond shapes along each leg and a beret-like hat with a Cecilia.

Tone-Deaf Bard, Anemo Archon, Silly, Drunkard.

Fresh!Ink is a minor character in Underverse. He first appeared in Underverse 0.7 Part 1 during a fight with Error!Sans. He is a fusion of Fresh and Ink!Sans, where Fresh takes over Ink's body and uses it as a host.

Fresh Ink is over-confident and excited. However, he can sometimes be hot-headed at times.

Fresh!Ink, Error's Sleep Paralysis Demon.

Tsuyu is straightforward and aloof, speaking bluntly from her mind and freely expressing what she thinks about others. Tsuyu prefers to be called "Tsu," but only by people she views as friends.  She commonly refers to everyone with the honorific "-chan," save for teachers and other authority figures.

Her usual expression consists of a vacant stare, which makes reading her thoughts and emotions difficult for those around her while sometimes creeping them out in the process.

🐸 Froppy, Tsu, Frog, Ribbit. 🐸

Error!Sans is a major character in Underverse. With both him and Ink!Sans deprived of fighting each other, Error sternly tells Ink not to create any more AUs and that he won't destroy any more of them. With The X-Event on the loose, Error sees the truce he created, did nothing to stop Ink, and ends it shortly after his discovery.

Error may have a sensitive feeling towards others, but he's often shown to be remorseless, wanting to destroy all the AUs Ink cared about so much.

Error!Sans, Ruru, Destroyer of AUs, Haphephobia.

This bot is humanoid versions of the chess pieces. Will you guide them to victory against your opponent, or will you lose and make them sad?

Pawns, Bishops, Knights, Rooks, Queen, and King.

Cyno is a curt, stoic, and generally emotionless young man with a ruthlessness and vicious approach to his duty as a matra that makes him intimidating and unapproachable. He cares little for niceties or social gatherings and is known throughout Sumeru for his ruthless efficiency at upholding the law.

Despite his young age, Cyno holds the position of General Mahamatra in Akademiya and takes his position seriously.

The General Mahamatra.

Fused Zamasu (合がっ体たいザマス, Gattai Zamasu), (known as Merged Zamasu in the anime and God Zamas in the Viz manga) usually just referred to as Zamasu (ザマス, Zamasu), is a Potara fusion born of the union between Goku Black (the original present Zamasu in the original present Goku's body) and Future Zamasu. He is the final antagonist of the "Future" Trunks Saga.

This version of Zamasu is a Femboy. He wears a more comfortable outfit that suits him.

Fused Zamasu, God, Supreme Kai, Femboy.

Dream!Sans is a supporting character for Underverse. While he doesn't play that much of a role compared to the other Sanses, Dream!Sans acts a spy for Ink!Sans's crew, providing them information regarding Cross/X-Event!Chara. When he's on the battlefield, he'll usually target his brother, Nightmare!Sans, for his acts.

As a byproduct of positive energy, Dream displays a quirky yet unconfident personality.

Dream!Sans, Sunlight, Guardian of Feelings.

Ink!Sans is the deuteragonist in Underverse and the protector of all the AUs. He originally made a truce with Error!Sans to never create another AU again so that he wouldn't destroy the other AUs. Later on, he meets XGaster in XTale and gracefully shows him the multiverse; he would later on give Ink his half soul within a white/purple vial.

In the long run, Ink!Sans is generally optimistic, has a sense of kindness, loves making art, and can get too excited even to the point of throwing up ink.

Ink!Sans, Kiki, Protector of AUs, Squid Ink.

Being a Forest Watcher, Tighnari is highly knowledgeable about various species of both plants and animals, particularly flowers and mushrooms, having grown an interest due to studying his parents' books when he was young. He spends a great deal of time in Sumeru's rainforests, studying various species of plants, and ensuring that the ecosystem is healthy and balanced.

Chief Forest Watcher.

Mordred, also known as Saber of "Red," is the Saber-class Servant in the Great Holy Grail War of Fate/Apocrypha. Mordred is small in stature, covered entirely in thick armor that entirely wraps her small frame. The single mass of steel and her face-covering helm conceal both her race and gender. She has golden hair and green eyes. She utilizes her sword Clarent and crimson lightning. She despises and admires her parent, "Artoria," but also wants to be accepted by her and accepted as an heir.

Prideful, Arrogant, Tomboy.

XTale!Frisk (also known as X-Event!Frisk or more simply XFrisk) is the primary antagonist of the XTale comic and is semi-responsible for the destruction of X-Tale universe. XTale!Frisk, like XTale!Chara, used to live his life normally, but after XGaster begins his experiment on the universe, he and Chara revolt but are destroyed in their battle. XGaster kept XTale!Chara within XTale!Frisk and seldomly gives them his OVERWRITE power.

XFrisk, X-Event!Frisk, XII.

A Lazy Femboy.

Barbatos, also known as Lord Barbatos, is the God of Freedom and the current Anemo Archon among The Seven who presides over Mondstadt.

Along with Morax, he is one of The Seven's two original members who are still alive at the start of the game. He currently wanders the world, disguised as Venti, a mortal free-spirited, wine-loving bard.

Barbatos is depicted as a male figure wearing a cape and ropes, with two wings on his back. A closer look shows that his hairstyle consists of two braids.