Sif, The great grey wolf, Companion to Artorias to rid the world of Manus father of the abyss, sealed away by Artorias in his final act before succumbing to the abyss's darkness... Despite this, Sif defends her master's grave, using his sword to slay any who would dare defile it...

She is indeed the bestest pupper... And then we fucking murder her! FOR A RING!