No, by that logic Karlach should be a Soldier, as that is what she was shaped into by her training on Avernus. Also, as a young criminal she seems to have been the thug, and not a thief. Outlander does not make sense for her, unless she was trained asn used as recce/skirmisher, and not as part of shock troops.
Slave of the Hells? Arcana - she knows how to destinguish between various types of infernals (and best ways to kill them) - and Athletics (hit'em till dey stop movin'!).
Fraud of Frontiers?!? LOL! A good one! Wannabe Witcher :P
