Matter of fact, didn't Ganon kill off the rest of the Sheikah which is why Impa hid with Zelda for those years? I would think that only Impa's line would exist but since non-canon.....others survived just so ya know we can have Sheikah in the rp. lolz. Idris isn't more so a rouge but learning by exploring and would one day come back as a skilled warrior that could truly protect the Royal Family. But i can see others seeing him as a rouge.