See: Serkis Seral, Snakefolk, Heroes of Goldcrest
Serkis Seral the Snakefolk originates from the Plains of Ruthal, where he spent his younger days watching the regular cage fights, which always had different people from all around the world. When he got older he found out most of the competitors were actually slaves and captives, and he did not approve of this. For this reason he went and healed one of the strongest warriors, Rogul, who in turn escaped with many others. Since then he went on his own travels, where he at some point partnered op with Vag. He himself has become quite the archer by now, while Vag had quite the muscle. Unfortunately they got captured by the undead at some point, and were imprisoned with some other people in their capital. This is where Jurgen found them.