Adolescent Radioactive Samurai Platypi

5 Spactronauts from the planet Spong crash land on earth. They are a symbiote race and must absorb into other creatures to survive. Upon crashing they have to leave their host bodies before they die, they come across a group of Duck-billed Platypus and enter the creatures. They discover another Sponger in a Panda that calls himself Zahn. He becomes their mentor and teaches them the ways of the Samurai