Suitors are a branch of Raiders who appear as a part of Lt. Morgan's constant attacks by Raiders seeking Yenchka's hand in marriage. Initially, they are part of a quest that is to defeat 50 suitors, but they still appear frequently after that. The suitors stopped coming in early March of 2013.
The formation is usually made up of 4 units in total with 3 frontline units and a supporting unit at the bottom-line. The front-line unit consist of either Skirmishers, Boom Booms, or Firebreathers, whereas the Cannoneers and Dustwalkers occupy the back row. There are often mammoths or Champions involved.
The Raider Kids introduce the Suitors, and after that they just appear with no other dialogue until the "defeat 50 suitors" quest is over.