From the anime Jyu Oh Sei, Thor was abandoned on the planet Chimera with his twin brother. This planet is harsh and they must adapt quickly to it or die. He meets others trapped on this prisoner planet and learns of a title called "Beast King". He decides that he must gain this title in order to find a way off the hellish planet.
Why I like him: He's strong and has a will to survive by doing anything he can to achieve this. Over the series he actually grows up which I found very refreshing.
Why I hate him: He whined a little at first but he grew balls quickly.
Overall: If you like survival anime check this one out as it's one of the best that I've seen. The OP is one of the best around too. It's a little cheesy but still fun.