Radomos!

[electricenigma_]

I don't know what else to do at this point. I have the game on 'litemode' to kill his IVs, I've turned on the code for maxing out my IVs. I've done my EV training. I don't get what the devs were thinking, but I firmly believe this dude needs a hard nerf.

[Faeborn]

First and foremost, getting past the pawns' Focus Sash ability and preventing Trick Room from going off will make things much smoother. An easy way to do it is either using Fake Out to break the sash effect or using a multi hit move, preferably super-effective ones. His mons except Metagross have weaker physical defense, so physical attackers are ideal. They're also slow due to expecting trick room.

 

For mons, you can use a strong bug type like Scolipede or Beedrill that get multihit bug moves (Pin Missile for power and Twinneedle for reliability) . Medicham, Hitmonchan, and Hitmontop get a variety or strong moves boosted by abilities despite being Fighting types. Ambipom gets both Fake Out and a variety of technician-boosted moves, including Beat up and Feint Attack (further boosted by the terrain). Bruxish and Tsareena both are physical attackers with abilities that block all of Metagross's priority attacks. As with all Double Battles, aoe attacks are great, especially combos like Manetric and Raichu boosting each other with Discharge and Lightning Rod.

 

For items, Silverpowder can be found on wild Mothims and Wormmadams (both rare Headbutting trees in North Aventurine Woods. Black Glasses are found on wild Sandiles in Tanzan Mountain. Spell Tags from wild Shuppets, Duskulls, and Yammasks in the Abandoned Power Plant. Gems also work, as well as Plates if you're patient to soft reset on mining rocks. If you use special attackers. Synthetic Seeds give a free Special Attack boost.

 

Working around the boss' strategies or beating them at their own games is how to win.

[vampirevulpix]

Also if the chess field annoys you: just send your pawn in with the move stomping tantrum, iirc Nidoking/Nidoqueen both learn it. Stomping tantrum destroys the field and basically nerfs his team's shenanigans. I always do this lol and it always works like a charm.

 

Re: your team - Radomus doesn't have a psychic only team but rather one that works with the chessboard field. Your team is very dark-heavy, which means Radomus' Gardevoir (which is hella fast) and Escavalier (very slow) will fuck you up either way, depending on whether Radomus managed to set up Trick room or not. 

If I may suggest: send out a mon that knows Stoming tantrum and to make sure Radomus can't knock it out, either give it a Quick claw (and get lucky with it)  or send out a second mon out that's ultra fast and can pull the attention (via Rage powder or something like that)(that would also free Skuntank to hold Dark glasses to further boost its dark attacks). After that, Skuntank can basically deal with his team all alone if it has good support on its side, because it doesn't have a Psychic weakness, can learn Dark attacks, plus it can pull off a Sucker punch too to get knockouts faster. It can ALSO learn Flamethrower to deal with Escavalier and Metagross. Plus, destroying the field doesn't impact the relationship points in any way, so yeah, stomping tantrum goes brrrr. 

 

I've found that the best way to deal with major battles (which include gym leader battles) is not to plan agains the opponent's typings but rather around the field in use. That can and quite often does make all the difference - because the fields can buff certain moves/mons so much that really, it doesn't matter if it's not super effective simply because it's just ultra strong on the field and working like a charm.