Parodius (series)
The Parodius series is a series of horizontally-scrolling shooters developed by Konami. The games are tongue-in-cheek parodies of Gradius, hence the name (Parodius is a portmanteau on Parody and Gradius). It also parodies many other Konami franchises, including, Antarctic Adventure, Castlevania, Xexex, Axelay, Thunder Cross, Taisen Puzzle-Dama, Space Manbow, Ganbare Goemon, Lethal Enforcers, Tokimeki Memorial and TwinBee.
Read more about Parodius (series): Games, Parodius in Other Media