Quarantine

I'll do as you said, ty for the info

Hi guys! I just started playing here (this is also my first thread)i was wondering if this onix was any great, could you help me? Oh, and if it is good, should i start training his evs now or when i complete the story? (i still have to defeat the 2nd gym) P.S: I'm not a native speaker so forgive me if i messed up some sentences