Uta

Species: Ghoul
Birthday: December 2
Zodiac: Sagittarius
Height: 177 cm
Weight: 57 kg
Blood type: B
RC type: Unknown
Affiliations: HySy ArtMask Studio
and Clowns

Uta is an old friend of Renji Yomo and Itori. He owns the HySy ArtMask Studio, where he sells bespoke masks. In his teenage years, he was known as No Face to the CCG investigators in the 4th ward.

He has a lot of piercings and tattoos on his body, making him look pretty intimidating, even as a normal-looking human. He's the one who also made a mask for Kaneki.

The tattoo on his neck is a Latin quote written in Greek letters which reads, "I can live neither with you, nor without you."

Νεχ ποσσυμ τεχυμ ωιωερε, νεχ σινε τε.
Nec possum tecum vivere, nec sine te.
—Martial, Epigrams XII, 46

He has a very nice way of speaking and seems to be friendly. Although his expression almost never changes, he has an amusing way of teasing people.

Uta was sadistic and savage from his youth, and though the narrative would have the reader believe he left those ways behind, it was not true. Once his affiliation with the clowns becomes apparent in the manga, it is revealed that he hasn't changed at all - only gotten better at hiding it. Like all members of his organization, he revels in creating chaos and destruction. However, his personal motives are still unclear.
(Source: Tokyo Ghoul Wikia)