Shibugaki

Alvin in the 80's series
Despite being a bully to children around him, he isn't evil.
Role

2003 appearance
In the 2003 series, Shibugaki (known as Abercrombie in the English version) was changed, although he is still large and borderline obese. Just like the 1980s series, he at first turned down Astro but later befriended him. He is also shown (surprisingly) to be friends with the very kid he bullies, Tamao.
Trivia
In the 1980s series, he is voiced by Kazuya Tatekabe in the Japanese version.
In the 2003 series, he is voiced by Susumu Chiba in the Japanese version and by Sandy Martin in the English version.