Kirby's Dream Land
From SmashWiki, the Super Smash Bros. wiki
Kirby's Dream Land (星のカービィ, Kirby of the Stars) is a 1992 platforming game developed by HAL Laboratory for the Nintendo Game Boy. It is the first game in the Kirby series, and thus the debut game of Kirby himself, and is featured as a Masterpiece in Super Smash Bros. for Wii U
The character Kirby was created by Masahiro Sakurai at age 19 for Kirby's Dream Land.