Supernova Security Services (aka Triple S) is the largest private military company. They provide services such as armed escort, security, intelligence, surveillance, and even assassination.
The Crimson
The Crimson is the largest and most notorious gang in the world. Their primary activities include theft, kidnapping, slavery, prostitution, trafficking humans, gambling, and drug trafficking.
New Arcanum
New Arcanum is a card game which relies upon collecting Arcanum cards. Arcanum cards comes in decks of 33, but complete decks are rare.