What is a good moveset for Klefki?

Question

If you have a good competitive moveset for Klefki, post an answer below and upvote the best ones. Movesets for any of its pre-evolutions can also be shared on this thread.

Be sure to include full set details in your post, e.g. items, abilities, natures and EVs. Some explanation, including the intended game mode for your set, is also appreciated. Access the full list of guidelines here.

Klefki Pokédex and learnset for reference.

Answer 1

Gen 9 NU Utility

Klefki @ Leftovers
Ability: Prankster
Tera Type: Water / Ghost
EVs: 252 HP / 200 SpD / 56 Spe or 252 HP / 200 Def / 56 Spe
Careful / Impish Nature
- Spikes
- Play Rough
- Foul Play
- Thunder Wave

This is the utility set Klefki uses in Gen 9 NU that takes advantage of its typing and Ability Prankster. Spikes with Prankster allows Klefki to almost always setup a hazard that chips grounded Pokemon before the opposing Pokemon. Play Rough is used for the STAB move since it allows Klefki to deal super effective damage to Goodra. Play Rough is also useful to chip Pokemon such as Calm Mind Jolteon. Foul Play lets Klefki punish the scary physical wallbreakers such as Decidueye, Hariyama, and Scyther for boosting their attack stat. Thunder Wave is a nice move to slow down opposing Pokemon that don't like being paralyzed. Leftovers give Klefki some HP recovery. Tera Water gives Klefki a nice defensive typing. Tera Ghost can be used if you want Klefki to have a Fighting immunity.

252 HP EVs are used for bulk. 56 Speed EVs allow Klefki to outspeed max speed Adamant Hariyama. The rest of the EVs and what nature you use depends on what you want Klefki to check. 200 Defense EVs with a Impish Nature lets Klefki check physical attackers such as Hariyama and Scyther better. You can use 200 Special Defense EVs with a Careful Nature if you want Klefki to check special wallbreakers.

Answer 2

Klefki @ Leftovers
Ability: Prankster
Tera Type: Water
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Dazzling Gleam
- Tera Blast
- Spikes
- Calm Mind

I haven't seen many people talking about Klefki in Scarlet and Violet, I think Klefki benefits massively from Tera Water, completely removing the need for Magnet Rise and instantly becoming a threat to its two biggest fears. This allows for a lot of freedom in the moveset, since both its attacks dish out so much damage without any drawback I found it more important to focus its nature on its speed and its remaining EV's on HP or SpD. With some good predicts you can pretty safely set up Spikes or Calm Mind and begin dishing out some damage.

Answer 3

Gen 9 NU Rain Setter

Klefki @ Damp Rock
Ability: Prankster
Tera Type: Ghost
EVs: 252 HP / 4 Def / 252 SpD
Calm Nature
IVs: 0 Atk
- Rain Dance
- Spikes
- Thunder Wave
- Foul Play / Steel Beam

A rain setter set Klefki uses on Manual Rain teams in Gen 9 NU. Klefki is a rain setter used alongside Tornadus due to Klefki's utility moves and Prankster. Prankster Rain Dance allows Klefki to setup Rain first most of the time. With Damp Rock, Rain Dance gives you 8 turns to use the Rain to overwhelm the opponent with Rain abusers such as Basculegion, Kingdra, Ludicolo, and Hisuian Qwilfish. Spikes allows Klefki to setup a hazard to chip grounded Pokemon switching in to put them in range of your teammates' attacks. Thunder Wave is used to slow down faster Pokemon such as Choice Scarf Mienshao, which is useful if you have something like a Modest Ludicolo that doesn't outspeed Choice Scarf Mienshao in rain. Foul Play allows Klefki to punish physical wallbreakers for trying to setup against it, being useful against Pokemon such as Feraligatr and Torterra. Steel Beam is an option over Foul Play, not for the sake of having a STAB move, but for being able to generate momentum to freely bring in a Rain abuser should Klefki have less than 50% HP left. The set uses a Specially Defensive EV spread so it can take special hits better. Tera Ghost is used so Klefki can become an emergency Spinblocker should you need to keep Spikes up on the opposing Pokemon's side. You can use something like Tera Water to give Klefki a nice defensive typing that gets rid of its Fire and Ground weaknesses.

Answer 4

Gen 9 NU Dual Screens

Klefki @ Eject Button
Ability: Prankster
Tera Type: Ghost
EVs: 252 HP / 64 Def / 192 SpD
Bold Nature
IVs: 0 Atk
- Light Screen
- Reflect
- Spikes
- Steel Beam

Despite RU banning Light Clay and Alolan Nintetales existing in NU, Klefki is still able to pull off a dual screens set for HO teams in NU. This is thanks to its Ability Prankster as well as the item Eject Button. Prankster allowing it to move first most of the time to get off a screen or both is what allows Klefki to pull off a screens setting set with Eject Button. Alolan Ninetales can't really use Eject Button with Aurora Veil since faster Pokemon such as Kilowattrel, Inteleon, Scream Tail, and Choice Scarf Pokemon such as Munkidori, Flamigo, and Flygon exist.

How this set works is pretty simple. You typically lead off with Klefki and use Light Screen and/or Reflect depending on the Pokemon in front of Klefki. With Eject Button, Klefki can switch out after being hit by an attack after getting off one or both screens to safely bring in a setup sweeper such as Drednaw and Bulky Double Dance Porygon-Z. Spikes allows Klefki to setup a hazard to chip grounded Pokemon that aren't wearing Heavy-Duty Boots. Steel Beam is used for the STAB move on this set to potentially have another way to bring in a setup sweeper after Klefki sets up screens should Klefki be at 50% HP or less. Tera Ghost is used to block Rapid Spin and become immune to Fighting moves should you need to Tera Klefki.

The mixed EV spread prevents Download Porygon-Z from getting a Special Attack boost when it is out against Klefki. You could use a max max EV spread of 252 HP / 252 Def / 4 SpD or 252 HP / 4 Def / 252 SpD with Bold / Calm Nature instead. This set is only used on HO teams, so this set is seen with setup sweepers such as Bulky Dual Dance Sitrus Berry Porygon-Z, Drednaw, Shift Gear Toxtricity, Booster Energy: Speed Scream Tail, and Flygon.