This is a vintage 1990 comic book from Mirage Studios titled "Eastman & Laird's Teenage Mutant Ninja Turtles #31." It features the popular superhero team of Leonardo, Raphael, Donatello, and Michelangelo, along with Splinter. The comic is in the US Comics tradition, with a wraparound cover by artist Michael Zulli. It is part of the Teenage Mutant Ninja Turtles series and is from the Copper Age era.