Because you like Hector in Troy
A wildly brilliant detective, Sherlock Holmes can figure out everything except how to interact with other human beings. See them in Sherlock.
Both intelligent and empathetic, Remus Lupin is worn down by the weight of a secret. See them in Harry Potter Series.
Severus Snape is a misanthropic potions teacher with a vindictive streak. See them in Harry Potter Series.
Castiel might be an immortal angel, but the human world is still more than a little confusing. See them in Supernatural.
It's hard to tell if Dean Winchester cares more about saving the world or his 1967 Chevy Impala. See them in Supernatural.
L is enigmatic, child-like, and one of the smartest people in the world. See them in Death Note.