Bulk and Spike have been added to the characters section of the Power Rangers Samurai part of Nick.com website. Spike is confirmed to be Skull's son, but no sign of who the mother is. Hopefully Skull will make a cameo.
Now on Rangerboard it has gone to debate on how can Skull have a teenage son, picking on the point that he has armpit hair, he has to be 16 or 17. And that would make his birth year 1993, when the show started. Now, Skull could had married a single mother and his personality could had rubbed off on Spike. OR Skull fathered a child while his tenure on the show and no one ever knew. I say, get over it.