I'm having a bit of a problem regarding how to roleplay a schemer character when everyone knows exactly what I am.
I'm the most veteran player in my group, so, for long I have been setting example for other younger players. They know me very well, and know I can be quite of a schemer. In time, this has made them be on their toes with all character I make regardless them being innocent and light or dark and secretive. They don't trust me a bit, and I guess that's okay, it was my actions that set me as this guy who can detach himself from the situation and break all the rules.
Given it's so hard to play a schemer when everyone is so alert, lately I have been playing more goofy characters, or classic action oriented brutes. Still everyone watches closely. Every time it seems I might be planning on stepping out of whats expected of me everyone wants to know what I'm doing, they want an explanation. They know I have a history of suddenly changing and revealing to be something else they didn't expect.
Problem is, my last character in the campaing died (A very good and welcome death) and the DM asked for me to do a certain PC, something that pretty much sticks out as someone who has their own schemes. A politician who has a known connection with an old enemy of the team, but who wants to join forces to defeat a bigger evil. As soon as I make my entrance, everyone is going to go tense and begin schemes of their own, build their webs of secrets and pretty much make my new character feel utterly unwelcome in the team and pushed out of all the decission making. The old apprentices have turned into masters while I was going soft on them and I'm out of my vampire player gears, still they keep seeing me as this all-menacing terror of betrayal.
I know that in the end the problem is metagaming, they're reacting to me not my character. But I don't believe adressing this will solve anything, we will metagame regardless, maybe more subtly, but to the same effect.
I need a blank slate, and my starting position is very disadvantageous. I could always roll another character and play something else, some things are not meant to be, but I trust the DM and if he says he wants for me to do this, I should at least give it a try. So, how can I make the other players trust a character who's very probably not to be trusted?