Multi-Legged Beast

These unnamed beasts appeared in a Samurai Jack episode: XCVI

Overview
They were used as mounts by one of the armies led by The Scotsman whose plan is to invade and overthrow Aku'styranny, but two of the armies along with their mounts were killed quickly before moving closely to his fortress. It is unknown if these animals would exist without Aku's tyranny.

Appearance
They appeared to be large pachyderm like creatures with a single horn capable of firing their targets in case of combat, sharp teeth, and multiplied legs which makes them move fast.