Yoshi's Egg

In most games featuring Yoshies, Yoshi eggs are involved. Yoshies are known for being capable of laying eggs at will, sometimes with Yoshies or items inside.

When Mario or Luigi collect one of these in Super Mario World, a Yoshi hatches and they can ride it. On Yoshi, they can swallow enemies with the X or Y button. In Yoshi's Island, Yoshi lays eggs by swallowing enemies. In Yoshi Touch and Go, he lays eggs when he collects fruit. The eggs can be used to collect items and defeat enemies. His eggs can be used as a weapon in Super Smash Bros.