This Mario papercraft is a Podoboo, fireball-like creature / enemy that is commonly found in castles in the video game New Super Mario Bros. of the Super Mario series, the paper model was created by aardonix.
Podoboos jump out of the lava in random spots of the level. Contact with a podoboo will cause Mario or Luigi to take one damage, losing all power-ups. In the Yoshi's Island series, Yoshi can swallow the Podoboos and gain a limited fire breath. In New Super Mario Bros. Wii, they can be defeated by using the Ice Flower. Podoboo made its debut Super Mario Bros.. Podoboos also appear in the Mario Kart series. In more recent games, Podoboos will do a flip before landing back in the lava, and resemble a roundish jellyfish/octopus rather than just a fireball. Similar enemies called Embers from the Paper Mario series replace Podoboos as enemies in certain levels. [Source: wikia]
You can download this mario paper craft model here: New Super Mario Bros. - Podoboo Free Papercraft Download