One of the oldest of the Ukime despite her appearance and childish behavior, it's been noted by Yowane Sorincha that Inu was alive as Inuzuka Ukime to see the founding of Konoha. She was meant to be the next head of the Inuzuka clan, but disappeared unexpectedly never to be heard from or seen again until now.
She spends much of her time with the mad insect, Aburame Destra, innocently playing house with the corpses that Destra stores for consumption. She's been shown to not truly be malevolent on several occasions, but in the end she must obey every command given by another Ukime.
A relatively weak Ukime due to the low level of power she was granted following her possession, Inu is still a formidable opponent to any standard shinobi. She has no particular weakness, but standard weapons and tactics work well against her. It's been proven that she can be injured without the ability to heal her wounds and she's even capable of permanent death. However another, higher level, Ukime is capable of healing her wounds and even reviving her.