did any of 你 think that hiccup it's very similar to alexander rybak?? (if u know who alexander rybak is OFC)

Actually, he has the Norwegian voice of Hiccup. (Hiccup is callen 'Hikken' in the Norwegian version) Well, I guess if Alex was a cartoon he would somehow look a bit like Hiccup, I guess. :-)
I put a picture of Alex & Hiccup here, sorry for bad quality.

Based on looks, he would kind of look like hiccup. Their hair is basically the same, but his face is a little chubbier and (no offence to him- hiccup is just very skinny in build) he is overally 更多 fat. And I don't know much about him, except do the information fairlex provided, so I don't know if personality-wise they're similar.