Himeka

Yes, I finally came up with a name and plot for this character X3

Name - Himeka
Age - ???
Her pocket-watch has the design of the alter on top of Temporal Tower on the outside and a time gear design on the inside.It keeps perfect time but I don't know how the hell she knows because. if you haven't noticed, it's got no numbers XD

She isn't a pokemon, but she is a sort of "Temporal Guardian" with some power over time. i.e. she can stop time in a certain area, create dimensional holes, etc, etc...
She first appears in the dark future to Juptol and Eimu, seemingly confused at the fact that her watch has stopped working. She helps them escape from Temporal Tower at some point (it'll all make sense when I finally do the "before story" :3) But she appears in the past to Riolu and Eimu at some point aswell.

And another thing. Himeka is ever so slightly schizophrenic (she subtly switches personalities every so often)

Gave me some ideas which I adapted