Solid Snake
Solid Snake has appeared in a number of other games, including other Konami games. Hideo Kojima makes a habit of referencing his previous work. In the Kojima-produced ' (and '), Snake appears as an unnamed character who sells items to the player. Konami's "Evolution Skateboarding" features Snake and Raiden as hidden characters, as well as two stages set in the Big Shell (the skateboarding minigame in "" is a demo of "Evolution Skateboarding" composed exclusively of these elements). Solid Snake also appears in both halves of a crossover between the "Metal Gear" and "Ape Escape" franchises: the "Ape Escape" monkeys appear with Solid Snake in the "Snake vs. Monkey" minigame featured in "Metal Gear Solid 3: Snake Eater". In turn, Snake appears in the corresponding "Metal Gear Solid" minigame featured in "Ape Escape 3", where he is rescued by Pipo Snake (Snake's character design in this minigame is taken directly from Naked Snake's).