I don't know if he is, but mine has a Metronome (which supposedly they have a 5% chance of holding). If you use the same move over and over it gets a 10% power boost the 2nd time, and then 20% the 3rd time etc up to 100% power boost... that with Fury Cutter is working quite nicely.

I've just added Shellos, so it's tempting to put him in over Bibarel. Previously I was tempted to nab myself a Gyarados, but having just used him, I resisted the temptation. It seems a shame to kick out my highest level, but Bibarel really isn't suited to being a decent water type, and the ground typing eliminates the electric weakness.