legless

Characters with body types that naturally lack any lower limbs. Commonly includes feral snakes, naga, as well as the merfolk bodytype.

missing_leg - For characters with at least one missing leg (or foot) which hasn't been replaced.
missing_all_legs - For characters missing all of their legs/feet.
2_missing_limbs

apode - The tag for creatures that move on land without legs. These are often serpentine.
draconcopode - The tag for legless serpentine creatures with an anthro or humanoid upper body.