Beetle Mania Toad
From the Super Mario Wiki
The Beetle Mania Toad is an unnamed Toad who appears in Super Mario RPG: Legend of the Seven Stars. He is first seen in the Inn of the Mushroom Kingdom playing with a Game Boy. If Mario talks to the Beetle Mania Toad before visiting Marrymore, he will just yell at Mario, asking him to leave. However if he talks to the Beetle Mania Toad after solving the troubles Booster is causing in Marrymore, he will sell him a Game Boy for 500 Coins. Mario can then access the "Game" option on the menu screen, which allows the player to play the Beetle Mania minigame starring a star-shooting beetle. The Beetle Mania Toad will keep playing his Game Boy after selling one to him, and if he talks to him, the Toad will teach Mario how to play the beetle minigame with no pay or deed whatsoever.