Try to make your IFF fit your ID. At your repsheet, the one right at the bottom, glowing, is your IFF or Affiliation. If you have the wrong affiliation, people might mistake you. You can drop your affiliation using the /droprep command at the cost of 350,000 credits.
And for the PvP thing, it differs. I hate PvP. Some Pirates may hate it, some may like it. Depends from player to player. A player who hates PvP would try to RP their way out of PvP (like me).