1. He is self centered and only cares about his own appearance
3. He has hate in his heart, he is going to slay a Beast that Belle loves. He dosent care about her opinion and he dissmises her words before throwing she and her father in a cellar.
5. Gaston only cares about Gaston
Thats why he is single, since he dosent have any room for others than himself and thats a narcissistic way of self loving, he only does what suits him and bring innocent people to his fights
6. Gaston is brave but stupid. He goes and fight the Beast on his own but eventually is thrown from the Castle Wall, he is not Dead.