User blog comment:Roxashasnoheart/Who would win? Alduin or Mehrunes Dagon?/@comment-67.236.1.188-20120612032151/@comment-71.94.96.170-20130529052111

You don't need to be dragonborn to shout. The nords who invented dragonrend were not dragonborn. So Dagon could potentially use the shout.