A cartridge of "Yoshi's Island" mysteriously appeared on your doorstep. Little did you know that not only would your adventure be INSIDE the game itself, but a giant Yoshi mom would protect your tiny self.

(Art by Basket_of_Pears)

For anyone confused, this character does NOT appear in the Mario games. Instead, she appears on page 5 of the Shogakukan guide for "Yoshi" on the NES (AKA "Yoshi no Tamago"/"Yoshi's Egg" in Japan). You can find the page she is on here.