Yami

Apperance
Yami was a young woman who lived in 4E 158. She was a Nogitsune.

Full-Shift
She demonstrated the ability to go full shift.

Swordsmanship
She also was able to use a sword, Max Nightshade was her teacher. Max was also the one who taught Yami how to go full-shift, coincidentally Max was also the one who ended her life.

In the RP
Yami's only appearance was in Hybrid.

Yami first appears in Whiterun and Falkreath, where Wellop is infected with Sanguinare Vampiris. Yami and Max go into Falkreath where Yami does significant damage to the guard force alongside Max.

Yami unfortunately sends an assassin after Max when he tries to find Lady Gray, unaware of why Max was trying to find her. Yami appears on the Sumerset Isles when Luke Narok and Max bring Gray there.

Yami brings Gray to Windhelm where Max breaks the 9 obsidian tantos that represented Yami's tails. Nogitsunes and Kitsunes only live as long as their tails do. And thus, Yami was killed.

Herself (Indirect)
Yami caused her own death when she was about to turn Lady Gray into a chimera. Max book the physical manifestation of her tails and she was killed.

Background
Yami's background is never spoken of.

Killed Victims
Herself (indirectly caused)

Trivia

 * She is the first nogitsune to ever be depicted in the series
 * Yami was one of many shapeshifter whose age is unknown. However, considering her actions during Hybrid it can be assumed that she was younger than most other shapeshifters, but she seemed to be older than Keith and around the same age as Wellop.
 * This means she may be anywhere from 36-42 at the time of her death. However, this is mostly speculation.