Specner Reid is a genius psychologist and BAU profiler on Criminal Minds. He's a complete dork and brilliant with a 187 IQ. Also, he has puppy dog eyes.
Fortunately there are no Viking serial killers for Hiccup to track down. The other thing about Dr. Reid: criminals keep targeting him because he's the cutest BAU member
Well, there are the bezerkers, they would do things to invoke holmgangs* as a way to shake people down. I would guess Hiccup would frown on that, once he found out.
*to be explained in a future chapter, but wikipedia is useful enough.