The Gangster appears as a playable character and a NPC in the Slums and Industrial. They are unlocked at the start.
The Gangster (Crepe) has the trait Blahd Basher which means that Blahds are automatically hostile towards you. It is best to try and recruit other Crepes to make sure that you don't get overwhelmed by Bhlads. Since you have team building expert, you can hire three people to join your party.