How to Evolve Grubbin

Grubbin evolves into Charjabug strictly through leveling. Once Grubbin reaches level 20, the evolution sequence triggers automatically after the battle concludes.

The second stage, evolving Charjabug into Vikavolt, depends entirely on the game generation you are playing. Game Freak altered this specific mechanic starting in Generation 8.

In Pokémon Sword, Shield, Scarlet, and Violet, you must use a Thunder Stone directly on Charjabug from your bag. The location-based magnetic field requirement from earlier games no longer applies to these titles.

Players on Pokémon Sun, Moon, Ultra Sun, and Ultra Moon cannot use a Thunder Stone. Charjabug must level up in a specific location featuring a special magnetic field.

In Sun and Moon, the only valid location is Vast Poni Canyon. You must progress late into the main storyline to access this area, meaning Charjabug remains in your party unevolved for a significant portion of the playthrough.

Ultra Sun and Ultra Moon introduced Blush Mountain as an alternative magnetic field location. This adjustment allows players to obtain Vikavolt much earlier on Ula'ula Island.

Using a Rare Candy inside these specific zones will also trigger the evolution, bypassing the need for wild encounters.

For Pokémon Sword and Shield, Thunder Stones spawn regularly in the Wild Area. The Lake of Outrage features a stone circle where evolution stones respawn daily behind the large pillars.

You can also pay the Digging Duo in the Bridge Field zone using Watts. The brother focused on skill has a higher probability of unearthing Thunder Stones.

In Pokémon Scarlet and Violet, Delibird Presents stores sell Thunder Stones for 3,000 Pokédollars. You must defeat three Gym Leaders before this item appears in the shop inventory.

Alternatively, Thunder Stones can be found as fixed glowing drops in the West Province (Area One) near the windmills in Paldea.

Vikavolt holds a specific niche in competitive play as a Trick Room wallbreaker. Its base 145 Special Attack ties with several legendary Pokémon, allowing it to OHKO standard defensive pivots.

However, a base 43 Speed stat makes it a liability outside of Trick Room conditions. It relies entirely on teammates like Cresselia, Hatterene, or Farigiraf to set up the field.

• Role: Trick Room Sweeper / Sticky Web Setter.
• Best Nature: Quiet (+SpA, -Spe) to maximize Trick Room priority.
• Optimal EVs: 252 HP / 252 SpA / 4 SpD.

The Levitate ability provides an essential immunity to Ground-type attacks. This effectively removes one of its primary weaknesses as an Electric-type, allowing safe switch-ins on predicted Earthquakes.

Running Vikavolt requires accepting its severe lack of speed. It cannot function as a standard fast pivot without taking massive damage first.

• Pros: Elite damage output, Ground immunity via Levitate, access to Sticky Web for team speed control.
• Cons: Base 43 Speed, weak to common Rock and Fire attacks, heavily dependent on Heavy-Duty Boots to survive entry hazards.

A standard competitive moveset includes Thunderbolt and Bug Buzz as primary STAB (Same Type Attack Bonus) options. Energy Ball provides crucial coverage against Ground and Rock types that resist Electric attacks.

Volt Switch allows Vikavolt to pivot out against unfavorable matchups while dealing chip damage. If you run Sticky Web, slot it over Volt Switch to support mid-speed teammates.

Using Grubbin in a standard playthrough presents distinct pacing challenges. Base Grubbin possesses low base stats and struggles against early-game Flying and Rock types.

Upon reaching level 20, Charjabug gains significant physical bulk. Its Battery ability boosts allied Special Attack by 30% in double battles, making it highly valuable for early VGC formats or double-battle NPC encounters.

The delayed evolution into Vikavolt in Generation 7 creates a mid-game power trough. Players must rely on the Eviolite item to keep Charjabug viable until Vast Poni Canyon.

In Generation 8 and 9, early access to Thunder Stones fixes this pacing issue entirely. You can evolve Charjabug at level 21, securing a base 145 Special Attack Pokémon before facing the third gym.

As an unofficial fan-site, Pokedex.me tracks how mechanics shift across hardware generations. The transition from location-based evolution to item-based evolution reflects a broader design philosophy shift by Game Freak.

Developers removed magnetic fields in Sword and Shield to streamline competitive team building. This change prevents players from being locked out of evolutions in games lacking specific environmental zones.

Always verify your game version before attempting to evolve Charjabug. Wasting time leveling in the wrong area or buying unnecessary stones drains in-game resources.