Becky Wolf (ベッキー・ウォルフ, Bekki Uorufu) is a power user and a member of the Robert's Ten. She is the shortest member of the team and hates to be ignored or being called small or a child. Ueki retires her with Masshu. Becky Wolf seemed to resemble a cowgirl, because of her hat, boots, and BB-guns. Her power was to change a shot fired from a BB-gun, into a meteorite. She was shown using this power effectively against Tenko's barrier.