If translations programs serve correctly, the Tapu Koko Prism Star's Ability is something along the lines of:
Once per turn, if this Pokemon is on your bench, you may attach 2 Lightining Energy on one of your benched Pokemon, then send this card to the Lost Zone.
Metal Goggles seems to block -30 damage and...effects? Status Conditions? Seems like Metal Frying Pan for everyone.
Electri Charger seems to allow you to flip 2 coins, for each heads, get an Electripower from the discard pile.
The non-Nanu Supporter seems to get up to 5 Metal type Pokemon, but there seems to be some condition I can't make sense of. I know for sure it's not the "If you had a _____ type Pokemon KO'd last turn" deals. So....yeah.
Colbalion GX's Power appears to be that if it's active, it protects all Pokemon with Metal Energy from Special Conditions. It's first attack does an extra 60 if there's a Stadium in play. It's GX says something like they can't use Abilities? Not sure if it's a 1 turn thing or permanent? Not sure