Vikavolt from Collection Sun and Collection Moon has been revealed! As posted before, an alternate art Vikavolt promo will also be given out to those who purchase a booster box of the set (the second one below). Thanks goes to Andrew C. and Bangiras for the translation!
Ability: Strong Charge
Once during your turn (before your attack), you may search your deck for a [G] Energy and a [L] Energy and attach them to your Pokemon in any way you like. Shuffle your deck afterwards,
[L][C][C][C] Electrocannon: 150 damage. Discard 3 Energy attached to this Pokemon.
Weakness: Fighting (x2)
Resistance: Metal (-20)