In "Fahrenheit 451," Montag was directly characterized as determined. An example of him being determined to read is when he starts ripping papers out of the bible and tells Faber "I need you to teach me". This is direct characterization because he says how much he needs it and he is determined to learn how to read.
In Fahrenheit 451," Montag was indirectly characterized as emotional. An example of him being emotional was when Clarisse put the dandelion under his chin and it didn't turn yellow so when Clarisse said he wasn't in love he was like "yes I am". This showed that he actually got upset that she would say that.