Just played (and won) my first run with a secret character: Neo. I decided on Neo becaue he doesn't come with any heavy artillery, just some helpful attributes. Having Clairvoyance and Fast is really useful in dealing with some of the peskier critters like aquators and rattlers, not to mention griffens. I think Neo also has Slow Digestion; CD, can you confirm?
Neo still requires some caution and strategy, which I like. I'm currently 2 for 5 so it's not a slam dunk run with him every time.
Lots of fun!