Teenage Mutant Ninja Turtles — IDW Publishing
Issue: #21
Last valuation update: 2026-02-13
In this special issue drawn by TMNT co-creator Kevin Eastman, the Turtles have struggled to survive against unstoppable enemies and impossible odds. The time has come for the next stage of their training to begin. The lesson turns deadly, though, when a mysterious new opponent arrives and teaches the Turtles they have MUCH left to learn!
Creators: Allen Passalaqua, Bobby Curnow, Shawn Lee, Robbie Robbins, Alan Payne, Dean Haspiel, Lorelei Bunjes, Dirk Wood, Matthew Ruzicka, Kevin Eastman, Greg Goldstein, Chris Ryall, Ronda Pattison, Ted Adams, Tom Waltz, Daniel Lopez, Andy Kuhn
Characters: Donatello, Leonardo, Michelangelo, Raphael, Karai, Kitsune, Patrick Miller, Master Splinter, Shredder