The Death Dragons were deformed dragons commanded by George Devilo. They were used to crash weddings.
The Somewhat Pointless Adventures of Zippy Edit
The Death Dragons followed George when he rose to the surface and came across Zippy and Mulder's wedding. They were used in battle when Zippy, Mulder, Deathrock9 and BigRandomKaiju decided to fight back. They were banished to hell with George.