Matthew Rhys
voices Riley Greene
Gabrielle Nevaeh Green
voices Elle
A.J. LoCascio
voices Gizmo
Izaac Wang
voices Sam Wing
George Takei
voices Noggin
James Hong
voices Grandpa
Calvin Shen
voices Radish
A.J. LoCascio
voices Evil Mogwai
A.J. LoCascio
voices Snout Jr.
A.J. LoCascio
voices Bucky
Haviland Morris
voices Theodora
B.D. Wong
voices Ratcatcher
A.J. LoCascio
voices Gaptooth
Randall Park
voices Yao/Odd-Odd
Ming-Na Wen
voices Yin
A.J. LoCascio
voices Acid Mogwai
A.J. LoCascio
voices Clam
Gabrielle Nevaeh Green
voices Urchin