Nature or nurture? Is Krypto heroic because he had terrific examples in Jor-El and Superboy, or is it in his blood? Let's use Superboy's mind-prober helmet to retrieve memories of his puppyhood when Jor-El was keen on recounting tall tales of Krypto's ancestors, starting with Krypto's father, Zypto.
And yet, that's exactly what we'll get all week. Come back every couple days for another Krypto precursor as we climb down his family tree!