Tsunemi Chiba is the craziest guy in Beck. He is the main vocalist and unlike Koyuki he has a more aggressive voice. He is the reason Taira joined the band. Besides his good vocals Chiba has good stage skills (acting) which the audience likes. The style that Chiba listens to isn't rock but you can find the typical rockers energy in it. Even though Chiba is crazy he is a perfect student. His dream is to open his own Ramen shop, but unfortunately he doesn't really have any skills in that area. He is the one that made up the bands name whilst watching Ryūsuke's dog (which is also called Beck). He is the guardian of Koyuki in school and he is ready to beat up everyone who dares to stand against him or Koyuki. And he does it thanks to the martial arts lessons he attends since he was young.
Translated from bulgarian language by Shakdun (firstname.lastname@example.org)