Sharu

Fennekin is in the Water Treatment Center, a side room with a console that "doesn't work" and a Pokeball. That Pokeball is an Electrode and, while fighting it, you need to change the field to the not-broken factory one. If you do so, the console will work and give oyu a Fennekin

im searching for that room since half an hour xD

if i'am right it's the only place with 2 rooms to enter