Oh ahahaha that was meant as a joke xD; Most of the mods/people in Other Chat were using the same Lady Gaga avatar, so I searched creepy face and picked this one xD It's only temporary though, I'll get the totem one back soon d:
Um Character wise I have some issues with him first is your use of several Pokemon game items... remove those. You can have some minor magic items (enchanted ones...) that can do something, but not items taken from the game.
Also you can't be faithful to Rivir and be a thief since being a thief honestly contradicts what Rivir stands for (especially honor). Rivir is more for a character who walks the path of a honorable warrior, and not a thieving rogue. I realize I don't have a god/goddess that would fit for a thief so I may add one for you (or others to use).
Like a crime investigator? Yes they would... but they would be no where near as good as modern day investigators since they lack a lot of the technology. Also I would say this type of career you would also be a great tracker since a lot of crime is done by bandits and so you have to track them down.
Likely you would be the member of a city guard (higher ranking).
If you meant like a private investigator (like those people can hire to investigate their questionable mate to see if they are cheating) that would work too.