The Chain Chomps are enemies in the Mario series and first appeared in Super Mario Bros. 3 for the NES video game console. They started out no bigger than Mario but has since grown dramatically over the course of the series. Chain Chomps attack whenever you get close to them, they're chained up so their range of attack is limited to the length of their chain. This Chain Chomp papercraft is from designer Icthus7.
Chain Chomp Papercraft [via Nintendo Papercraft]