Kaeya is a member of the Knights of Favonius in Genshin Impact that just doesn't fit in perfectly with the rest of the members. Instead of being honest, outgoing, and ambitious, Kaeya would rather take the justice of Mondstadt into his own hands. Kaeye is a bit of a wildcard, and depending on his mood, there may be more reports of criminal activity in town.

Related: Genshin Impact: Is The Manga Important To The Story & 9 Other Facts You Need To Know

Kaeya has also been known to even give the Traveler trouble to lure out criminals he has been tracking. In the game, he is a four-star cryo character that uses a sword to take on foes.

Updated by Jessica Thomas on May, 8th 2021: Kaeya's backstory is one of the most interesting in Genshin Impact. Kaeya is a former spy who once sought to destroy Mondstadt. He constantly wears an eyepatch, although he claims nothing is wrong with his eye and he has a sadistic nature about him. Unlike the rest of the Knights of Favonius, he is a pretty mischievous character who seems to have his own way of doing things. For fans of Kaeya, there is a lot of juicy info about the character contained in his in-game story and in the game's prequel manga, so we've added a few more.

12 Kaeya Had an Eyepatch in the Manga

Kaeya in the Genshin Impact Manga

Kaeya is one of the characters featured in the prequel manga to the game. In the manga, he was still wearing his eyepatch, although he didn't seem to be showing his sadistic side as he was still in hiding. None of the characters talk about this, nor does he take the eyepatch off when he fights Diluc.

He was told he was the last hope for Khaenri'ah, giving fans a theory that the eyepatch may be linked to his past.

11 Rosaria Likes to Trick Kaeya

Rosaria hiding from Barbara in Genshin Impact

Rosaria is a lot like Diluc in the way she takes care of Mondstadt. One of the ways she gets information is by getting Kaeya drunk so he will talk. This is one of Kaeya's weak points, and it seems like he may not even know how much information he divulges when he gets drunk.

Rosaria seems to do this quite often though, so it's possible that Kaeya just doesn't care about the information he's giving out.

10 Diluc is His Brother

diluc genshin impact

One of the most surprising things that players learn about Diluc is that Kaeya is his little brother. The two don't get along, but Kaeya was adopted by Diluc's dad after being left in front of the winery by his real dad. At one point, Diluc and Kaeya were extremely close and acted like they were in sync.

There was an abrupt change in the pair's relationship, though, that occurred on the same night that their dad died.

genshin impact kaeya

Alongside his brother Diluc, many of the citizens of Mondstadt can't help but want to pair their children with Kaeya. Kaeya is seen as an upstanding and handsome young man who would be the perfect son-in-law for many of the parents of Mondstadt. This is because his cold nature isn't public knowledge.

Kaeya seems to have little to no interest in dating, let alone marriage, and it will likely stay that way.

8 He Loves to Drink

Diluc and Kaeya

Kaeya is said to be found in taverns more than he is at the Knights headquarters, where Jean and Amber do their work. Kaeya doesn't seem picky about which tavern he visits as long as it has his favorite wine. He has been noted for both going to Cat's Tail along with his brother's bar.

Related: Genshin Impact: 10 Hidden Details Most Fans Missed In Mondstadt

Kaeya even mentions alcohol several times throughout his voice lines and story showing just how much he loves to drink.

7 He's Sadistic

Genshin-Impact-cooking-guide-healing-food-ingredients-1a

If Kaeya turned out to be an antagonist, then it truly wouldn't surprise players. Kaeya is incredibly cruel in the way he handles both his troops and enemies. He loves seeing those around him panic, especially if he caused the dangerous situation that they suddenly found themselves in.

Kaeya wasn't even bothered while watching his dad die and found the situation interesting, showing just how warped he is.

6 He Keeps Tabs on Everyone

Diluc and Kaeya

Kaeya has associates from all walks of life, especially when he is trying to find drinking buddies at the taverns. This includes treasure hoarders and thieves, who he regularly keeps a list of. To Kaeya, alcohol and socializing is just another way of luring information out of his enemies.

When asked about his list, though, he acts confused as if it didn't mean anything.

5 He Was a Spy

Kaeya Cutscene in Genshin Impact

Kaeya has a surprising story twist, as he was actually a spy sent by a neighboring region to Mondstadt called Khaenri'ah. Kaeya's mission is still a bit shrouded in mystery, but it seems to point to the young boy being sent to sabotage the wine industry of the region so that the economy would suffer.

Kaeya was an amazing spy and only one person knows of his past, and that was by his own choosing.

4 Only Diluc Knows The Truth

genshin impact diluc

Diluc is the only other person in Mondstadt that knows of Kaeya's true origin. Tragically, Kaeya told Diluc, the truth on the same knight his father died, sending the two into a duel. On that night, Diluc not only lost his dad but also his brother, who had grown so close to him.

Related: Actually, Bennett Is One Of The Best Characters In Genshin Impact

Kaeya has accepted his fate of keeping his secret to himself and now supports Mondstadt in full.

3 He Hates Grape Juice

genshin impact kaeya

Kaeya loves wine, but when it comes to the taste of grape juice, he can't understand how Diluc drinks it. Kaeya feels that great juice is one of the worst drinks ever created and would likely much rather see the grapes that went into the juice be used to make even more alcohol.

It's safe to say that he likely dislikes most fruity drinks that don't contain alcohol when going by his known tastes.

2 He is Unpredictable

Kaeya Up-close

Kaeya even earns some of Jean's disapproval by the way he operates. Kaeya tends to only do things the way he sees fit. It can be tough to predict just how Kaeya will proceed with an operation or what tools he will use to complete it. This can be seen in his first story quest when he lies about being a pirate.

Kaeya shouldn't be trusted completely by those around him unless they want to end up a pawn in his plans.

1 His Eye May Not Be Injured

Eyepatch Scene with Kaeya

One of the defining features of Kaeyas's character is the eyepatch he wears, and even Paimon wants to know about it. According to Kaeya, though, his eyepatch is nothing more than a fashion accessory, which going on his usual methods of telling the truth may or may not be true.

It's tough to tell if Kaeya has a hidden secret behind the eyepatch or just enjoys the mystery it brings him.

Next: Genshin Impact: 10 Things You Should Know About Diluc