I could be completely wrong but he does have certain traits that make me wonder. There are some weird similarities
Emotional dissonance –
Most of the garden kids we’ve met share this trait. While fighting especially Characters such as Furuta, Hairu and Arima show little reaction. And even outside of fighting they all show strange emotional traits.
Uta has gotten close to people sheerly for interest, not personal companionship. Just curiosity
Uta show next too no emotions himself even though he seems to amuse himself screwing with the emotions of others.
Also Furuta clearly enjoys violence or he wouldn’t be laughing while dropping metal bar on people or generally causing suffering. And Arima is said to be a sadist. Uta is shown joyfully fighting as a teen/young adult.
Hand to hand fighting –
Not all but Furuta and Shao are both known to be particularly strong in hand to hand combat. We’ve only ever seen Uta fight hand to hand.
Uta’s past
Uta’s past is an absolute mystery. The first time we see him he was beating the crap out of a large group of ghoul. And that as a young adult/teenager he was the strongest ghoul in an entire wars and was made the leader (That alone speaks to him being at least a prodigy if not more)
Biology
Uta’s eyes are a really strange trait we’ve never seen in a single other ghoul. Hell the only person we’ve seen with a constantly active kakugan is Mutsuki who is purposefully modified human.
And no matter what anyone says NO I do not believe his eyes are just tattooed, it definitely points too something weird in his biology. Which could point to him being modified or “bred”
Plus Uta’s just plain powerful, we’ve never even seen him have to use his Kagune once which make me wonder…
Clowning
Uta seems to be a powerful member of the clowns and knows “Souta” how well I have no clue.
And there was that time Uta teased Hirako about Arima like he might actually know something (though he might have just been screwing with him for the sake of it)
But again I could be completely wrong. So yeah now I’ve got that off my chest.
I’ve been busy with work recently, but I’ve wanted to mention Uta’s mon for some time, and I think we should be getting some Uta soon-ish? Maybe. Maybe it’s my wishful thinking because I’m bored out of my mind with Kaneki’s lack of character growth.
Ishida let us know Uta’s tattoos follow a theme (”I thought of a theme and just drew from there”) and that they are somehow important or at least related to understanding Uta as a character (”What’s on his back? I’m not telling you yet”).
So, one of his tattoos is a mon. Mons are family crests that were first only used by the wealthy and the samurai, but as the use of family names spread, the mon spread too. Your formal kimono would be decorated with a mon, for example, for your wedding (in the TG calendar, Matsuri’s kimono has an (unidentifiable) mon on his wedding day). Their history is fascinating but most people nowadays wouldn’t be able to tell you what their mon is off the top of their head.
Here’s Uta’s tattoo side by side with a mon it represents:
This is the 「虎杖」(itadori) mon. Otherwise known as Japanese knotweed (fallopia japonica). The japanese flower language assigns it with the meaning “Not what it seems” (figures, right?). “Itadori” means “taking pain”, and supposedly when you rub a stem or leaves over a scrape or bruise it’ll heal faster.
The itadori mon is easily recognizable because there are literally only two variations of it. To provide some scale, there’s some 6000 mons in total, and something like a 1000 different wisteria variations among them. So itadori is somewhat special. Itadori iirc is supposed to be one of the original mons – the ones used by those weathy families and samurais.
Fun fact! Itadori is so invasive that it can grow through concrete and asphalt. It can grow basically in any conditions. It just… survives.
So there you have it, a ghoul without a family but with a family crest and some more floral imagery in Tokyo Ghoul.