Bethany, congrats on the new boy and sorry to hear about your King boy! However, I do doubt that your new boy is a King, just an older boy than the other's who were there. They aren't all from the same spawn and he could have been there a lot longer so he just grew a little bit.
And Zooxe, unfortunately PetCo babies don't last as long. Yes they can live up to 2 years maybe 3 if started out right. But depending on which baby you get, they've already gone through a huge trauma being shipped and then depending on how long they've been in the PetCo cups, they are severely stunted which often leads to early deaths. But you still get the satisfaction of growing some animal on your own if your baby is luck enough to make it to adulthood