i think it's because of his personality, LOL. i think it's different, bizarre, and unique. AND I LOVE IT.
he's kinda like the weird distant cousin you ignore.
i also think Junno doesn't have much to say during appearances and stuff. i think he knows that that type of stuff is up to Kame and the others.
but i LOVE Junno. JUNNO IS MY NUMBER 2. like Kame, it was a love at first sight type of thing. it just so happens i love the weird one. XD;;