GO Rocket Leader Arlo remains a tough test in Pokémon GO, but he can be defeated in May 2025 as long as you use the best counters in your team.

Arlo's lineup includes Shadow Alolan Grimer, Slowbro, Gyarados, Dugtrio, Alolan Muk, Scizor, and Metagross. Use Ground-type, Fire-type, and Electric-type Pokemon for effective counters.