During WWII, Satomi Ito was a Japanese immigrant stationed at Oak Creek when President Roosevelt declared all Japanese-American immigrants be detained in American labour camps. At one point, Satomi was Bitten by an Alpha, becoming a new werewolf. Satomi met the kitsune Noshiko Yukimura
She spends most of her time playing Go in order to control her anger. Noshiko has no idea that Satomi is a Werewolf until Merrick pistol-whips her, causing her anger to flare and her eyes to glow.
Satomi throws the molotov that burns and eventually kills Rhys. She also helps Noshiko stop the nogitsune by attacking it from behind so Noshiko can stab him.
Satomi has been living in or around Beacon Hills for some time. Since her time at Oak Creek, she's become an alpha and maintained a pack of her own. She used to visit Talia and bring her reishi tea, which Derek thought smelled terrible.
When the rest of her pack got sick, she didn't because of her tea ritual.
She is incredibly fast, able to dodge bullets Matrix-style. She killed an assassin by shoving a throwing spike through her neck.