These are extra folks obtained through achievements through the Dungeon 
Trial Mode

Unlock   How to Unlock

Ellen - Collbrande Score 150,000 Campaign Points in Dungeon Trial Mode
Ellen - Duergar Score 30,000 Campaign Points in Dungeon Trial Mode
Ellen - Kaladbolg Upload a 4,500 Point Dungeon
Keats - Alphard Upload a 4,500 Point Dungeon
Keats - Collbrande Score 150,000 Campaign Points in Dungeon Trial Mode
Keats - Duergar Score 30,000 Campaign Points in Dungeon Trial Mode
Keats - Valiant Score 100,000 Campaign Points in Dungeon Trial Mode