Kid Icarus (光神話 パルテナの鏡, Hikari shinwa: Parutena no Kagami, Myth of Light: The Mirror of Palutena) was the first game in the Kid Icarus series. It used the same engine of the first Metroid game and one of the enemies in the game was similar to a Metroid.
Super Smash Bros. series
In Super Smash Bros. Melee, Pit appears as a collectable trophy. The description even says "Will Pit ever fight again?", hinting that Pit might appear in the next game.
Finally, in Super Smash Bros. Brawl, Pit is a playable character. His character design within the game is said to be a "huge leap forward in his evolution".