I am listed as an agency but I also work as a freelancer, should I have two profiles?

No, you don't need to have two profiles. Many agencies in the site are listed as both agencies and freelancers. To be recognized as both, all you need to do is go to your "Profile updater" and select the option 'Freelancer and outsourcer' or for Account type.

You will now have the option to create a Company profile for your agency, as well as a Freelancer profile for yourself.