So when confronted with people stereotyping you on the job there are many ways to turn it to your advantage. This is a necessary strategy to learn as:
A) People will use stereotypes – often with no malice.
B) You're a geek, fanboy, fangirl, otaku, tech-head, game fanatic, etc. As of this writing people like us do get stereotyped.
One method you may use, when you realize an interviewer, client, or co-worker is accidentally stereotyping you is to dive straight into the stereotype – and find the positive in it.