From the Super Mario Wiki
“On my business card, I am a corporate president. In my mind, I am a game developer. But in my heart, I am a gamer.”
Satoru Iwata (岩田聡) is the fourth president of Nintendo, and the first Nintendo president not related to the previous presidents by blood or marriage. He has done a lot of work with the GameCube and is responsible for its success. He is also the executive producer of many games and a previous employee of HAL Laboratory. In April 2013, he replaced Tatsumi Kimishima as CEO of Nintendo of America.
He makes cameos in a number of Nintendo games, but the most notable appearances were in WarioWare, Inc.: Mega Microgame$!, where he appeared on Wario's TV, and in WarioWare: Smooth Moves, where he (under the name Shop Manager Iwata) was the owner of a video game store and sold 18-Volt a Game & Watch for 9-Volt, whenever the player wins a microgame in 9-Volt and 18-Volt's set, he is happy, if the player loses a microgame, he becomes slightly frustrated and a customer leaves the store (which are the life counters).
List of games
Since Satoru Iwata is automatically credited as "Executive Producer" on every Nintendo game released following his promotion to president, the following list cover only credits given before said promotion.