Galvodon
From Tardis Wiki, the free Doctor Who reference
One "untraceable terror loose in York" faced by SIGNET at some point before the Hervoken was the Galvodon. (PROSE: Hervoken Halloween [+]Loading...["Hervoken Halloween (short story)"])
Behind the scenes[[edit] | [edit source]]
The text of Hervoken Halloween does not clarify whether the Galvodon was a single being, a species, or something else.
