ChiScara

ChiScara is the slash ship between Tartaglia and Scaramouche from the the Genshin Impact fandom.

Canon
Though not meeting in the currently available quests, Tartaglia and Scaramouche are known acquaintances of the Fatui Harbingers. Scaramouche is Tartaglia's senior. As he is the sixth Harbinger, a higher role than Tartaglia at the eleventh. They are commonly considered polar opposites, in personality and appearance. Lacking similarities other than their occupation.

Not much is known about their relationship, as they have not been seen together in any current events or quests. However, in the "Into the Perilous Labyrinth of Fog" event of the 2.2 update. Tartaglia is seen wandering through the domain, searching for clues or hints of the 'balladeer', also known as Scaramouche. "I originally came to this domain because I thought it might have something to do with The Balladeer." Continuing this Tartaglia says "Scaramouche is in possession of a certain Gnosis, and we happen to have lost contact with him." Tartaglia is currently searching for signs of Scaramouche, or Scaramouche himself in this event. Emphasis on we. Presumably, he is referring to the rest of the Fatui. It is thought that another Harbinger (or Tsaritsa) tasked Tartaglia with searching for Scaramouche.

During the rest of the event, numerous quotes can be found, forming a blurry idea of their relationship. "Of course, it didn't surprise me in the slightest that Scaramouche would do something like this." Perhaps hinting at further world building and development of their bond.

Some speculate that Scaramouche's agenda is centered on a certain Gnosis, the electro gnosis to be exact. Previously held by the Raiden Shogun before being traded for the traveler's life, between Yae Miko and Scaramouche. As stated before, Scaramouche has lost relatively all contact with the Fatui, include Tartaglia. Running away with the Gnosis for unconfirmed intentions. Clearly not informing Tartaglia on this, as Tartaglia was assigned to look for him and the electro Gnosis.

Other than this, few canon interactions have occurred publicly between the two, especially after Scaramouche's supposed betrayal of the Fatui. Hopefully, further theories and evidence is soon brought to the spotlight.

Fanon
In their unanimous involvement with the Fatui Organization, fans alike started to speculate on their connection. With their stark differences in design, personality, agenda, aesthetics, certain tropes rose to the surface. Such as but not limited to 'Opposites Attracted' trope that is commonly known throughout the Genshin Impact fandom. With Tartaglia and his charismatic and reckless personality, it perfectly opposes Scaramouche's. In fanart of the two, Scaramouche is repeatedly portrayed as a quick-tempered and misleading dwarf. Often causing playful turmoil between them, often in the sake of "fluff" or comedy. Centered around their unstable relationship, though it is usually in sake of comedy.

Height difference. Though miHoYo shies away from identifying age, height, etc, it is estimated that Tartaglia stands at about 6'1 feet tall (185.4 cm). He is assumed to be within the ages of 19-22, being the youngest Harbinger currently or ever in history that is currently known of. Although Scaramouche's canon age has not been leaked, it has been confirmed that he is substantially older than Tartaglia. Depressingly, Scaramouche only stands at about 5'4 or 162.56 cm, roughly. This has caused a positive stur in the fandom, some making jokes or incorrect quotes on the turmoil and shenanigans caused between them because of these few numbers, especially lead by Childe mocking Scaramouche in a playful manner, only to result in passive aggressiveness from each other for about a week. At least it has been speculated between numerous Tumblr notes and Twitter threads. It is simply a head canon, for now.

Fandom
FANFICTION