The official Cast can be found here
http://cbears.wikia.com/wiki/Cbear%27s_Survivor_Peru_Wikia

and here is the full cast (minus the exiled contestant)
Viuda:
- Red W. (redwing)
- Maddie F. (omggiraffe)
- Tony H. (GroupGamer)
- Mel T. (Me2013)
- Michael B. (diarzibari101)
- Aaron L. (phillyboy27)
- Renny A. (Renny10)
- Tyler H. (tylerparkerharvey/boomboxninja) he is switching accounts so for now this is what I have from him

Buff:http://imgur.com/ipYamUp

Iscaya:
- Aiden W. (Gamerden13)
- Matt A. (mattarous)
- Riley T. (TheEmpress)
- Daniel G. (danltheginger)
- Jackson G. (coolranch)
- Luke D. (brashful)
- Kyle B. (Kyle12212)
- Carlos S. (cswagger)