Stella, you get that sword he is holding by joining his Gravelord covenant. Though its not as big as the one he actually has in the game, if you run down to the catacombs at the start of a new character and get it, it's a really good starting weapon.
i just recently built up the strength requirement to one-hand the gravelord sword... it was definitely worth the torture to go all the way down there to get it XD not to mention the great scythe ^_^ see, when i first went down there to get the gravelord sword, i was soul level 8... i might take another crack at the catacombs since i've gotten to soul level 45 since then
I have a bit of an idea on the human Nito theory: Perhaps when the First Flame was discovered by what would later become the Lords, Nito was among them, an average human like the rest. But since they did not know what Fire was and that it could be fatal, or they did not know about the concept of death(since the everlasting dragons were immortal), Nito stepped into the Fire and was killed by burning down to the bone. But perhaps his death in the First Flame gave him power(I don't know how to word it properly, perhaps his death became power in the First Flame and it was given to him, its the best that I can do), he was reincarnated as Gravelord Nito, the first one to die, so therefore he would rule over those who would die from then on. Kind of like the story of Yama. But all conspiracies(half-baked?) aside, brilliant picture!