Sorry Tumblr, Jay Baruchel is taken. The star of the How to Train Your Dragon 3: The Hidden World may be an unlikely sex symbol, having started out as a geeky Canadian in Judd Apatow's Undeclared, but he's grown up a lot...especially in animated form. We began the films with Hiccup (voiced by Baruchel) as a gawky teen in a Viking village whose fondness for dragons make him a reluctant heir to his father, the village Chieftain, Stoick (Gerald Butler). After bonding with a crippled dragon named Toothless, Hiccup is forced to adapt to brutal realities: in …