Love will be in the air in February during Pokémon Scarlet and Violet's next Tera Raid. The Raid boss will be a Fairy-type Tandemaus, which is a fairly nice mascot for Valentine's Day. The Raid will be active from February 13 to 15. While Tandemaus is a big cutie, its stats aren't too huge. Trainers should have an easy time beating this Raid.
What are the best Pokémon to use against Tera Fairy Tandemaus in Scarlet and Violet?
The bottom line is that the Steel-types of Pokemon Scarlet and Violet are what trainers should be using against Tera Fairy Tandemaus. This isn't only because Steel-types counter fairies, it's actually more because of Tandemaus' signature move, Population Bomb.
This move can hit up to 10 times, which will certainly be enough to KO enemies easily. Since this attack is so devestating, it's best to use a Pokémon that resists Normal. Steel-types like Bronzong, Revavroom, Iron Treads, and Orthworm don't have to worry about taking too much damage from Tandeamaus and can retaliate with super effective damage.
There is one other Pokémon that has a great matchup against Tera Fairy Tandemaus: Gengar. Since it's Ghost-type, it's totally immune to Population Bomb as well as Tandemaus' other Normal-type attacks, Double Hit, Super Fang, and Hyper Voice.
For trainers who have a Gengar on them, the best thing they can do is give it a Choice Specs, since Gengar pretty much will only want to click Sludge Wave during the battle. Steel-types could also use a stat boosting move to help them beat Tandemaus quicker (e.g. Bulk Up on Corviknight, Curse on Orthworm, etc.).
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Shane Foley is both a huge gamer and a Contributing Writer at Pro Game Guides. He's been gaming ever since the Nintendo 64 came out, and he knows everything there is to know about Pokémon, Fire Emblem, Zelda, and several other Nintendo franchises.