He first appeared in New Class Day episode segment, The Just-us League of Supertoons, when Superbun introduced him first and he literally ran circles around BatDuck and Decoy. But after learning that Batduck doesn't have any super powers, he and the other League members kicked him out, only for Wex Wuthor to appear and plan to use his super-power transfer belt to suck all of the powers of him and the other members. After Wex was defeated, Dasher and the other heroes cheered for Batduck.