Guest Stars Kimiko Glenn voices Lena Lin-Manuel Miranda voices Fenton Crackshell-Cabrera / Gizmoduck Libe Barer voices Violet Sabrewing Eric Bauza voices Big Time Beagle Eric Bauza voices Beagle Boys Eric Bauza voices Bouncer Beagle Hugh Bonneville voices Santa Claus Abby Ryder Fortson voices Little Girl