Singles battles place one active Pokémon on each side, while Doubles battles place two active Pokémon on each side. Doubles creates many extra interactions because moves can target partners or both opponents, and positioning matters every turn. Support moves such as Protect, redirection, speed control, Helping Hand, and Fake Out are often more valuable in Doubles. Singles often emphasizes switching, hazards, individual matchups, and long-term positioning. A team should be built for its intended format rather than copied unchanged between them. Check the format’s rules because legal Pokémon, items, and special mechanics can differ even within the same game.