Each member of the 5, as well as a few allies, has at least one Form Change. This is Goro's: Half-Earth Level 1.

Half-Earth is an Inoshishi Clan exclusive that grants the porcine enhanced earth manipulation and durability while changing their body to earth, which extends further as the form levels up. The later 2 forms are unlocked after mastery over metal and lava, respectively.

(NOTE: From this drawing on, a lot of my art will adopt a sketchier art style and sometimes duller colors, as I'm just so into it.)