Board Thread:Spoilers!/@comment-24674051-20161013043134/@comment-24674051-20161014144233

i think they have stopped messing with his age. Gold restored him in the QoD arc, and when last we saw him, he was providing information to locate the Apprentice, and he was still in adult form. I think he's adult to stay at this point. (Of course, writers are fickle beasts).