A wolf who can control electricity, to a point. The most he can do, if he wanted to, is recreate a thunderbolt once a day, or use that same amount of "power" throughout the day. He can also absorb electricity during a thunderstorm, but if he takes in too much he visibly discharges the excess.
His body twitches uncontrollably throughout the day, hence his name, but it depends on how much power he's holding on to. Usually he discharges some between his ears during the day so he never takes in too much.