Celebi

Celebi is a legendary pokémon whose job it is to help forests flourish and help keep the flow of time in check alongside Dialga. She is first introduced in Chapter 14 of ''Stun. ''

Celebi was one of the first legendary pokémon to be taken over by the darkness, and was used to murder Stun in the past, causing a chain reaction that allowed Stun to visit Sato for the first time, and also causing a splinter in the time-space continuum that resulted in an alternate timeline where Stun was never there to defeat Tenebrae and the earth was destroyed.

Celebi and Mew are shown to be great friends. She was one of the many legendary pokémon to be captured by humans between the events of Stun II and Project Stun.