To hot to handle
The others who had been around Peter for a while knew he was a Wight. They knew he was an undead creature, a subclass of the vampires. And they were also well aware that Wights could raise the dead and turn them into their loyal servants.
However, they didn't know that Peter was a bit special in that regard. Not only could he raise some types of undead that others couldn't, but he could also have two undead at once. But, unfortunately, he had lost his favourite two Lesser Wights, Hilston and Legs, who came from a five-spiked Dalki, during the Great War a millennia ago.
And, with Peter having gained additional power, there wasn't really a necessity to have Lesser Wights. In the first place, he didn't want to use anyone that would be weaker than the last two he had. Otherwise, they would just get in his way or slow him down. But now, there was a good opportunity for him.