• Bellibolt can be quite unassuming, and specially offensive Pokemon such as Hydreigon and Rotom may see it as a free opportunity to get into position. Assault Vest turns the tides against them with Electromorphosis + Parabolic Charge, which makes Bellibolt seem impossible to remove for certain Pokemon. It's also a decent check against Iron Bundle.

• Grass- or Fairy-type Tera Blast: Tera Blast is important coverage to have; with a Fairy Tera type, Bellibolt reliably checks non-Tera Steel Dragon-types.

• Muddy Water versus Chilling Water: Muddy Water should be used with Tera Electric for much-needed coverage. Alternatively, Chilling Water weakens common switch-ins such as Garchomp and Baxcalibur, allowing you to reposition your team more safely.

• Acid Spray: This threatens non-Steel type switch-ins, and it also lets Bellibolt effectively use Electromorphosis without having to take damage first. It's also a powerful tool against Unaware walls such as Skeledirge.

• Sucker Punch: While weak, Sucker Punch snipes Pokemon that activate Focus Sash and/or deals chip damage when Bellibolt is guaranteed to go down.

Tera Types

• Fairy-type: Tera Fairy Bellibolt offensively checks big threats like Roaring Moon and Dragapult by walling their non-Terastal sets and nabbing surprise KOs.

• Grass-type: Tera Grass Bellibolt can stay in versus common Pokemon such as Hippowdon and Breloom, sponge their attacks, and either chunk them or survive and reposition.

• Electric-type: Maximizing Parabolic Charge damage is a viable option.

EV Spreads

• 228 HP / 28 Def / 180 SpA / 44 SpD / 28 Spe: This spread is to avoid the 2HKO from Timid Choice Specs Rotom-W and Hydreigon's Hydro Pump and Draco Meteor. 28 Speed EVs allow Bellibolt to outspeed 4 Speed EV Hippowdon. 28 Defense EVs are enough to survive Focus Sash Garchomp's Earthquake, which notably becomes a 3HKO if Bellibolt Terastallizes into a typing without a weakness to Ground.

• 228 HP / 156 SpA / 124 SpD: This EV spread avoids a 2HKO from Timid Choice Specs Iron Bundle's Hydro Pump. This spread can also use a Quiet nature and 0 Speed EVs for the slowest possible Volt Switch.

• 228 HP / 52 Def / 180 SpA / 44 SpD / 4 Spe: This spread sacrifices outspeeding Hippowdon for surviving a +1 or Choice Band Dragonite Earthquake.

• Bellibolt's stats allow it to be deceptively bulky, and a pure Electric typing is not terrible on a defensive Pokemon with reliable recovery and pivoting.

• Parabolic Charge: Parabolic Charge gives Bellibolt a more constant stream of recovery, though it is much less punishing than Discharge.

• Volt Switch: Volt Switch maintains initiative when predicting switches after bringing Bellibolt in on something that it walls, such as defensive Gholdengo or Corviknight.

• Chilling Water: Chilling Water punishes Garchomp and Hippowdon on the switch.

• Thunder Wave: This disrupts opponents if Bellibolt doesn't have Discharge.

• Fairy-type Tera Blast: Tera Blast hits common Dragon-types such as Garchomp and Baxcalibur after Terastallizing into the Fairy typing.

• Soak: Soak catches Electric-resistant foes on the switch and forces them to either switch out or Terastallize early, with major targets including Garchomp and Baxcalibur.

Tera Types

• Grass: Terastallizing into the Grass typing flips the matchup against Ground-types like Hippowdon and Garchomp on its head, turning their super effective attacks into resisted hits that still activate Electromorphosis. Tera Grass Bellibolt also absorbs Spore versus Breloom and Amoonguss, effectively walling them as well.

• Fairy: Fairy Tera Bellibolt comfortably walls Dragon-types, removing a lot of their offensive pressure.

• Water: Water is just generally good to have as a defensive Tera type. It also gives Bellibolt STAB on Chilling Water for slightly more damage.

EV Spreads

• 228 HP / 244 Def / 4 SpA / 4 SpD / 28 Spe: This EV spread allows Bellibolt to survive two Glaive Rushes from Adamant Baxcalibur if it is not in a position to Terastallize. The physical bulk lets Bellibolt always survive Life Orb Garchomp's Earthquake, and after Terastallization into a neutral type, it becomes a 3HKO. 28 Speed EVs allow it to outspeed 4 Speed EV Hippowdon.

Items

• Leftovers: Leftovers provides long-term passive recovery alongside Slack Off, which can make Bellibolt very difficult to remove. Leftovers also removes any chance of a 2HKO from powerful physical threats such as Baxcalibur.

• Sitrus Berry: Sitrus Berry is a good backup option if Leftovers is already in use.

• Rocky Helmet: Rocky Helmet Bellibolt can switch into and passively punish physical attackers; the chip damage can also break Focus Sash and weaken foes into range of Electromorphosis-boosted attacks.

• With such good natural bulk, Bellibolt can easily survive hits from common threats and nab surprise KOs in return with a cheeky Choice Specs set.

• Discharge / Thunderbolt: Discharge or Thunderbolt is the preferred primary STAB move, as either one takes advantage of Choice Specs more than Parabolic Charge. With an Electromorphosis boost, Bellibolt can 2HKO common switch-ins without having to Terastallize, like Dragapult.

• Fairy Tera Blast: Tera Blast is important for coverage; with a Fairy typing, Bellibolt reliably checks non-Tera Steel Dragon-types. Muddy Water should be used with Tera Electric.

• Muddy Water versus Parabolic Charge: Muddy Water lets Bellibolt win one-on-one against Hippowdon. Parabolic Charge should be used alongside Muddy Water if running Tera Electric.

Tera Types

• Fairy-type: Tera Fairy lets Bellibolt turn the tables on bulky Dragon-types such as Baxcalibur and Roaring Moon by scoring a surprise KO on a potential setup attempt.

• Grass-type: Tera Grass turns Bellibolt's only weakness into a resistance, and Tera Blast gets surprise OHKOs on threats such as physically defensive Hippowdon.

• Electric-type: Tera Electric + Choice Specs turns Bellibolt into an offensive behemoth, and with an Electromorphosis boost it can OHKO resistant Pokemon like Dragapult, Hydreigon, and specially defensive Garganacl.

EV Spreads

• 228 HP / 28 Def / 196 SpA / 28 SpD / 28 Spe: This EV spread allows Bellibolt to survive Choice Specs-boosted Draco Meteor from Hydreigon and Earthquake from Focus Sash Garchomp; Garchomp's Earthquake becomes a 3HKO if Bellibolt Terastallizes into a typing without a weakness to Ground. The Speed EVs outspeed 4 Speed EV Hippowdon, while the Special Attack EVs are enough to OHKO physically defensive Hippowdon with Muddy Water.