This is doodling. These are fan arts of various animations. An upper character is Viper (Keroro Gunsou). The right is Arare (Dr. SLUMP), and the left is Neko-musume (Gegege no Kitarou). The lower side is Nezumi-otoko (Gegege no kitarou).

楽描き。「Kロロ軍曹」のVイパーと「*r. *LUMP」のAラレ、「GゲゲのK太郎」のNこ娘とNずみ男。Nこ娘は初代と3・4代目の絵柄の描き分け。