This cube craft paper toy is Gadzilla Norimaki "Gatchan", there are #1 and #2, are green-haired, cherub-like creature with wings, based on the anime and manga series Dr. Slump. This paper craft model is designed by duver14. Originally one hatched from an egg brought home by Senbei from a time traveling trip. Later on it inexplicably replicates into a second one.
Gatchan eats almost anything, except for rubber as seen in "Gatchan Goes for a Walk", and particularly likes to eat metal. She/he can also shoot rays from his/her antennae. Gatchan speaks in his/her own language consisting primarily of sounds like "pupipopipi" that Arale somehow seems to understand. It has been named Gatchanism by the manga. Although Gatchan has no defined gender, the manga constantly refers to it as her.
You can download the paper toy template here: Dr. Slump - Gadzilla Norimaki Gatchan Cube Craft Free Paper Toy Download