[quote=@Vec]
[@Balthazar007] Am I free to add/come up with lore for the lizard tribe or do you have a background/way of life already in place for them?
[/quote]

You can make up lore, but here's the preset lore. They aren't just lizard/snake people. Any reptile-person can be a part of the tribe. Their tribe usually stays in the swamps, but they also can be found in the mountains and forests (not the cold, white tree, forests however, at least not usually). 

Their tribe values cunning above all else. The leader of the tribe is constantly changing, like a snake shedding it's skin. If two or more individuals desire to be the tribe leader, they are free to use any means necessary to eliminate the competition.