Based off of hermit crabs, Yados sport a large violet shell, and a gray head with two yellow claws on each side.
As they are immobile, Yados hide in their shells, becoming invincible while doing so. Should the player land on them while hiding, they will be bounced upwards in a similar manner to a Spring. Occasionally, they will pop out of their shell to fire an energy sphere at the player. However, this leaves them vulnerable, allowing the player to destroy them using any non-jump attack.