WX-78 is a playable character in the game Don't Starve. WX-78 is a dynamic character and potentially the most powerful however he starts off as one of the weakest characters. His Health, Hunger and Sanity start out at 100 points each but can be upgraded by eating Gears to 400, 200 and 300 respectively.
The downside is that rain will cause damage to him (though the resulting sparks produce light). He is also the only character that can be hit by lightning and if he is, he'll become overloaded. The lightning strike itself will heal him but hurt his sanity while the overload will cause him to glow for 4-8 minutes and increase his speed during that time.