Clayf was the strongest of the Legendary Soldiers. He battled with a large, multi-pronged lochaber axe that also worked as a shield. It absorbed any ability given during battle.
Bakugan Ultimate Handbook
This massive warrior is the strongest of the legendary soldiers. Clayf uses a long-staffed lochbar axe to pummel his opponents and shield itself from attacks. But that's not all Clayf can do. If an opponent gets an ability on the field, Clayf can absorb that ability!
He, alongside his comrades, appeared to the Brawlers in the Doom Dimension but disapproved of asking them for help. He used an imitation of Julie's elder sister, Daisy, who would always beat her at everything, to battle her in a fake, abandoned ghost town. Clayf eventually revealed his true form. Julie learned to not compare herself to her older sister and Gorem, her Guardian Bakugan, evolved into Hammer Gorem thus passing Clayf's test and defeating him.
Clayf was released as part of the BakuSwap Series. An Aquos version comes with 310 Gs or 650 Gs, a Pyrus version comes in 390, 520, or 590 Gs, and a Subterra version comes in 440 Gs or 700 Gs. Pyrus/Subterra Dual Attribute versions come in 310 Gs or 570 Gs.
Clayf is based on a Japanese clay figurine called a dogū, specifically a Shakōkidogū from the Jōmon period.