They are the source - vessel of the Elemental Bending that is present throughout the series .
Lion Turtles ( voiced by Jim Cummings ) are gigantic lion - and - turtle hybrid creatures .
Lion Turtles are the source - vessel of the Elemental Bending that is present throughout the series .
Lion Turtles ( voiced by Jim Cummings ) are gigantic lion - and - turtle hybrid creatures .