Because you like Manny Delgado in Modern Family

The quiet, intense Daryl Dixon lets his crossbow do the talking. See them in The Walking Dead.

L is enigmatic, child-like, and one of the smartest people in the world. See them in Death Note.

It's hard to tell if Dean Winchester cares more about saving the world or his 1967 Chevy Impala. See them in Supernatural.