Marrowak -- Back in the GSC era that item made it attack stat-wise the Mega Mawile of its day (stats capped at 999 in pre-RS era which Marrowak reached with one swords dance), though even with those numbers it still faced many 2-3HKOs...(GSC was very much a stall era)
Indeed. On top of all that, its signature move, Bonemarang, hits twice. So it beats up Sturdys and Focus Banders that are weak to it. It also goes well in a Trick Room team if you run it Brave with 0 IVs.