Namor with Santa costume has the Power Santa which enables him to reshape the Multiverse as he can see fit.
http://img516.imageshack.us/my.php?image=namorsanta2xy.gif
http://img516.imageshack.us/my.php?image=namorsanta20ae.gif
http://img516.imageshack.us/my.php?image=namorsanta38xx.gif
He just has not unlocked the full potential of Power Santa in those pictures.