How to Evolve Tandemaus

To evolve Tandemaus into Maushold, raise it to level 25. If it reaches this level while in your party during a battle or via the Auto-Battle feature, it evolves silently without triggering the standard evolution screen. Using EXP Candies or Rare Candies triggers the normal evolution animation.

Evolving Tandemaus requires a simple level threshold but features a highly unusual execution depending on how you gain the experience. The resulting evolution, Maushold, is entirely determined by RNG upon generation.

• Target: Maushold
• Requirement: Reach Level 25
• Forms: Family of Four (99%) or Family of Three (1%)

For story playthroughs, this Pokémon is a fantastic sweeper. The combination of the Technician ability and the signature move Population Bomb easily tears through gym leaders. However, it holds zero viability in serious competitive tiers like Smogon SV. Its abysmal bulk makes it a liability against any established offensive threat or entry hazards.

With Pokémon Legends: Z-A shifting mechanics back to a more traditional, contained environment, the Let's Go Auto-Battle feature from Generation 9 is expected to be absent. If Tandemaus is included in the Lumiose City Pokédex, the silent evolution gimmick will likely be removed.

1. Keep the Pokémon in your active party.
2. Engage in standard wild encounters or trainer battles in the city.
3. Reach level 25 to trigger a standard, visible evolution screen.

Until the game releases, players should expect to rely on standard EXP farming or feeding the Pokémon Rare Candies to bypass the grind entirely.

Pokémon Scarlet and Violet introduced a completely unique, silent evolution mechanic for this specific species. If you want to witness the actual evolution screen, you must level it up using a Rare Candy or EXP Candies.

To trigger the silent evolution via Auto-Battle, follow these steps:

1. Place Tandemaus in your active party.
2. Initiate an Auto-Battle using the Let's Go feature by pressing the R button.
3. Defeat wild Pokémon until it crosses the level 25 threshold.

The game skips the evolution animation entirely. You will simply find a Maushold in your party menu where your previous Pokémon used to be. The exact same silent transition occurs if it gains passive EXP while sitting in your party, as long as it is not the lead Pokémon sent out in a traditional battle.

The evolution process in Pokémon GO abandons the main series level requirements and silent gimmicks. It relies strictly on standard resource collection.

1. Catch enough wild spawns to accumulate 50 Tandemaus Candies.
2. Select the Pokémon from your storage and tap Evolve.

There are no buddy walking requirements or time-of-day restrictions. Using Pinap Berries during catches will drastically speed up the candy collection process.

Players often encounter confusion due to the silent evolution mechanic or standard gameplay locks. Here is how to fix the most common roadblocks.

• "Nothing happened at level 25": Check your party menu. If it leveled up passively or via Auto-Battle in Scarlet and Violet, it already evolved without notifying you. Look for Maushold in your roster.
• Holding an Everstone: Ensure the Pokémon is not holding an Everstone. This item hard-locks the evolution regardless of the method or level used. Remove it via the bag menu.
• Fainted during battle: If it faints before the battle concludes, it will not receive the required EXP to cross the level 25 threshold. Revive it with a Revive and try again.