Fin is just a very small fox. Though he hates this height, he does try to make up for it to be the 'big bad boy' in many ways.
He does have a heart and compassion, but he likes to see himself as 'the bad guy' in many situations. As the traditional 'villian' of the stories, he does like to brag hugely about his accomplishments and is not tired enough ot tell the same success story over, and over and over again.
He is an intelligent fox, as the word goes, wisdom is better than strength. But there is an ongoing discussion among everyone who knows him if he is truely 'wise' actually. Strength however, he has not. but hr is smart enough to get what he wants through others to get the 'heavy lifting' done.

He's greatly stubborn, and almost nothing can convince him he is wrong or should know better. NOPE, you will not get through in his head.
Which is also his greatest flaw. He would learn so much more and be more smart even if i wasn't. But don;t tell him that, he'll disagree with out anyway.
When treatened he gets defensive very easely and is in fact a great liar aswell to get himself out of situations.