This Comic's Cast:

So, if it wasn't already clear, this is not the Shredder we just saw earlier. He's not one of the two Shredders that hang out in Two Shredders Pizza. This is the real, uncloned Shredder. What's he doing in Mario's world? Go read CVRPG Meets the TMNT for a full explanation.
 
    

When evil spreads across the land, and darkness rises and the monsters roam. When the creatures of the night make beautiful music, and the things that go bump in the night go bump with greater enthusiasm. When the world is in peril and is in need of a hero...

These guys are, sadly, the best the world can hope for. These are the adventures of the heroes of CVRPG. They mean well, they try hard, and occasionally they do the impossible...

They actually do something heroic.