|“At castle Throg across the span, a world away from kith and clan, you'll weep at how your woes began, the night the shadows bound you.”
|— An old nursery rhyme about the Black Carriage
Castle Throg is a castle on the continent of Dang. It is surrounded by the Killridge Mountains and the Blackwood. It was originally used by Ouster Will after he stole the Holoré and Holoél from Yurgen. While at the castle, he experimented with melding animals. After he died, Gnag the Nameless took control of the castle, where he then began building an army of Fangs with the help of Stonekeepers Amrah and Murgah. After Gnag died, the castle was inhabited by Fangs leftover from the Wingfeather War.