He seems to be pretty useless except for punching Ging, he doesn't have any real fight scenes. Yeah, he was one of the main characters of the Yorknew Arc, but he seems minor. He's also in the Exam Arc, but all of them are the main, just like on the Yorknew Arc. He's just a minor main character for the first and last 2011 anime Arc,
Does he have an arc in the Manga? I haven't read it.
But he's still a nice main character even if he doesn't have an arc