How come Callum clearly into his 30s, has the boyish charm to still appear some half decade younger than Welling? Spoiler: suspension of disbelief my mouldy crack! Different incarnation? wtf? Time travelling "young" Zod? Mirror Zod? Or mentally regressed after entering a new body that couldn't hold the completeness of his psychiatry so the last 20 years were cropped? or similar to that emergency back up zod like in that voyager episode vs most of what we saw in Doll House this season?