No idea why you're getting downvoted. This is an interesting subject.
Personally I believe that class and roleplay aren't that tightly coupled, and when I have been a player, the other players at the table have said I have a reputation for playing characters that are very unique for their class.
A couple examples of this:
I played a Water Genasi 4 elements monk who had 0 eastern flavour. She was just a spear-wielding, half-drunken sailor with waterbending powers and a Newfie accent.
I also played a half orc cleric of Grummsh, who I basically RP'd exactly like most people RP a Barbarian; tribal, short tempered, physically strong.
I didn't get to play him very much, but I later played a Beast Barbarian who I RP'd like a cleric. The idea was that he was a mild mannered acolyte, but had a curse that caused him to turn into a monster when he was in a stressful situation.
A class is just a package of mechanics. You can hang whatever skin you want on top of those mechanics as long as you can justify them within the flavour of your character. Look at the stuff the rules say your character gets, and go from there. Don't read the big block of flavour text where WOTC tells you what your class should look like.