Kellogg's

The Kellogg Company, doing business as Kellogg's, is an American multinational food manufacturing company that produces cereal and convenience foods, and markets their products by several brands, their cereals sometimes having a prize in the box. Kellogg's products are manufactured and marketed in several countries.

1993
In 1993, Kellogg's Apple Jacks included sticker cards from characters in Nintendo games. The front had an illustration of the character from the game's cover art, and the back has classified information: A brief character profile and space to write hints and the date the player started and completed the game.

Mega Man's profile: MEGA MAN was created by Dr. Light to fight the robotic armies of Dr. Wily. In Japan, where Mega Man first appeared, he is known as Rock Man.

Mega Man 5 summary: Protoman has gone wild! It's up to you and Mega Man to free Dr. Light from the grip of Protoman's robots.

2000s
In Japan, Kellogg's included cards from Capcom, Konami and Namco game characters in their cereals early in the 2000s, which included seven Rockman cards.