You're basically are claiming to be roled as opposed to vanilla, and saying that the character itself is not really suited to the role, but that the flavor text explains this away?

Like: Mr. Sherlock Holmes, you've been transported to the present to help uncover a string of murders, unfortunately you know not modern laws and forensics. After the police catch you doing some cocaine, and find out who you are, they confine you to your room at nights, making investigations impossible. Fearing for your life, knowing all villains would try to slay Her Majesty's greatest detective, they give you a bulletproof vest and advise you to wear it at all times.

You are bulletproof, and immune to most NKs.

You mean something along those lines? That would be better answered as a 'No, not consistent' but I could see how you'd go kinda if the flavor did it. If it's something like that, the answer should be a 'No', if it's just vanilla-dom, then it's a yes.