Released in 2009, this Teenage Mutant Ninja Turtle paper model is an "oldie but goodie". Leonardo, the leader of the Turtles, is shown mid-action having one katana sword drawn and the other half out of its sheath.  PDF and Pepakura PDO templates are still available for download at Action Papercrafts. The finished model stands 10" (26 cm) tall. Build photo by Two-wisemen.

Other Papercraft Turtles:
Painted Turtle
Ninja Turtles with Pizzas Paper Toys
Green Sea Turtle