If any of you plan to use Vikavolt for maingame playthrough then don't bother, it evolves at Vast Poni Canyon which is located at the fourth Island (basically the victory road) and it's predecessor only learns physical moves except for discharge

And by the time you evolve it,it will be too late because it stops learning anything past lv 49 so no Bug Buzz and the TM for Agility is postgame