One of the many great things in the HTTYD books is the existence of Fishlegs. Most of the boys are big, rough-and-tumble tough guys raised in a warrior society and you probably wouldn't meet many like them in real life. And of course there's Hiccup, maybe not someone of your usual Viking mold but he's a polyglot and a great sword fighter who is really great in a crisis, so he's exceptionally talented in ways you probably also don't encounter IRL.
But Fishlegs breaks the genre. He was born to be a band and choir nerd but he was born more than a millenia too soon. And so we see his suffering as a typical nerdy kid tries to survive Viking society. With modern medicine his asthma, knock knees, poor vision, etc. could be corrected and he could fit in with most of his peers and find a nerdy friend group, but since he's a viking, he's just painfully inadequate.
It's fortunate that he and Hiccup build a better society where not only the strong can belong.














