Professor Samuel Oak- World famous Pokemon researcher with a heart as big as the nature preserve in his backyard. He provides young Pallet Town trainers with their starter Pokemon, training gear and invaluable information along the way. Samuel is the closest thing Ash has ever had to a father figure.
Gary Oak- Samuel's grandson and Ash's rival. Gary is a pompous brat made famous by a reality TV series that chronicles his quest. To his credit, he was taught by the best and is an outstanding trainer in his own right but the possibility that he's not as good as Ash worries him.