Pikachu love hiding their Pichu nests in modern walls: warmth, ready electricity sources, and electricity-insulating fiberglass! Fluctuating lamps and power surges are a dead giveaway, as the Pichu accidentally discharge all the time.

Machines with large magnets need frequent inspection as curious Pikachu investigate by rubbing their cheeks on them — and then get stuck. Relocating Pikachu colonies works similarly, but with a polarity shift at the end of the journey for thorough distribution.

Their nests are easily distinguished by the smell of ozone. Gathering storms provoke Raichu outbursts as their static charges build. Sometimes they get so riled up that after lightning strikes, they fire back at the clouds.

Raichu in Alola are normally peppy, pleasant, and easygoing, but dispense swift and terrible justice to Rattata if there’s pancakes nearby. Feuds between pancake-loving Raichu and Raticate can escalate into gang warfare.