Walking through the old forums and
lore threads always puts a grin on my face — the debate about Smough's transformation is one of those deliciously weird corners of 'Dark Souls' that mixes gameplay spectacle with grim speculation.
My favorite theory, and the one that makes the most sensory sense to me, is the soul-absorption idea: Ornstein falls, Smough grabs the surviving knight’s lightning and spirit, and his body balloons to hold that extra power. You can almost see it in the boss animation — lightning flaring off the
Armor as if a foreign force has been grafted in. Others extend that to say Smough literally ate bits of Ornstein’s armor or even the corpse, a grotesque, cannibalistic fusion that explains the heft and sudden electrical reach.
I also love the mechanical-vs-lore split: some fans insist it’s just a boss-phase gimmick, a way to keep the fight dramatic, while lore-hounds weave rituals, divine favor, or corrupted sanctification into the explanation. For me, the best reading blends both — a gameplay trigger representing a horrific, supernatural transfer of strength — and it always feels suitably grim and theatrical in equal measure.