The Yoshi (ヨッシー, Yosshī) universe refers to the Super Smash Flash series' collection of stages and properties that hail from the sub-franchise of the Mario series that deals with main sub-series character Yoshi. It is generally agreed on that Yoshi and related items count as Mario properties, but Yoshi has appeared in enough of his own games alongside enough original characters and properties that many consider him as holding sway over a "sub-universe" of Mario. Yoshi is also considered part of his own universe because his symbol consists of a spotted Yoshi Egg rather than the iconic image of a Super Mushroom held by other Mario characters.