Greebo has added some pretty excited new concepts to their Nippo Goblin team over on IndieGoGo. How about Teenage Mutant Ninja Turtles and Villains!?
From the update:
We want make more! Nippo team can’t be very Nippo without rat and turtles! And we want to add them to the perks! In future we will do also more rats for the Nippo Underworld team.