Board Thread:Off Topic/@comment-109.154.221.35-20150602205254/@comment-70.211.8.226-20161010214438

Only an Unrelenting Force shout summons Vulthuryol, and I doubt there were Dragonborn among the Dwemer. My guess is that Vulthuryol was imprisoned by his own kind, possibly even a Dragon Priest. It's highly unlikely that the Dwemer could have harnessed the power of a shout.