Shigeru Ookido

Shigeru is a character who is roughly the same age as Satoshi (though Shigeru is assumed to be slightly older, due to the height difference between the two); they were playmates and next-door neighbors when they were younger, but drifted apart when they both discovered their love of Pokémon, according to the video game. At the start of the series his rivalry with Satoshi becomes a recurring motif. Like the video games, manga and anime, Shigeru is described as an overconfident and arrogant trainer who's knowledge of Pokemon stems from being the grandson of Professor Ookido. As Satoshi's rival, he always seems to be a few steps ahead of Satoshi, much to Satoshi's chagrin. Prior to his introduction, Shigeru usually comes off as an arrogant show-off in the beginning. However, his personality begins to change as he matures. Later on in the series, he grows into a nicer and more humble person…