Pit is a fictional character and the main character from the Kid Icarus series of Nintendo games , first seen in Kid Icarus on the Nintendo Entertainment System in 1986 and then in Kid Icarus : Of Myths and Monsters on the Nintendo Game Boy in 1991 . Pit is a fictional character and the protagonist of the Kid Icarus series , first appearing in Kid Icarus for the Nintendo Entertainment System in 1986 and later appearing in Kid Icarus : Of Myths and Monsters for the Game Boy in 1991 .