darth caldoth was a male duros dark lord of the sith, who lived at an unknown point in time and wrote a book titled "the bestiary of darth caldoth", which mentioned various sith warbeasts such as the gundark. according to the legend, caldoth eventually gained a sith apprentice, the twi'lek ry nymbis, and they were considered the two most powerful individuals in the galaxy at one point. caldoth killed his own apprentice with a sith ritual that turned the person's body into stone when he felt nymbis was going to betray him. with the ritual, nymbis was trapped in an eternal nightmare. darth caldoth is only alluded to in the novel "myths & fables" written by george mann and published in august 2019.