Barry is often clumsy, and quite hyper, he repeatedly bumps into the player and demands the player to pay him a fine. But very often, (if not always) he easily forgets and helps and/or battles the player. He is quite fond of the Gym LeaderCrasher Wake. Barry is the son of Palmer, one of Sinnoh's five Frontier Brains. Barry wants to be just like his father and he trains hard to achieve this ambition. He and his father are very similar: they are constantly in a hurry, running into people, even the player, and also react the same when they bump into them.
Barry became a lot more serious, realistic, and mature after his biggest defeat against Jupiter. He also made it his goal to defeat her, which he later does after the player and him teamed up when Team Galactic were calling the two legendary Pokémon.