When you speak to this NPC he says:

""Of course there's no danger in everything catching flames and exploding like a huge helium bomb. This baby will get you to Undercity faster and safer than any boat, and the view is truly breathtaking. Speaking of breath, smoking is not allowed while on the zeppelin, and fire spells are banned from being cast during the trip.""

As of the latest patch, he yells when the Zeppelin arrives :) Convenient.

This NPC might be a reference to the highly popular anime show Dragon Ball Z, in the show, Frezza was a powerful alien ruler who sought after a mystic power called the Dragon Balls.

I just heard him yell ""The zeppelin to historic Tirisfal Glades has just arrived! Don't be caught dead without the latest in Forsaken fashion!""
Odd...