Mordred’s such a fascinatingly messy character in Arthurian lore—like, here’s this guy who’s either Arthur’s nephew or secret lovechild (thanks to some very convoluted family trees), and he’s basically the ultimate betrayal catalyst. The way medieval texts flip-flop on him is wild: sometimes he’s a scheming usurper, other times a tragic figure doomed by fate. I love how 'Le Morte d’Arthur' paints him as this opportunistic snake who exploits Arthur’s absence to seize the throne, but then Welsh legends hint at deeper grudges, like his mom Morgause being slighted. The final battle at Camlann? Peak drama—father and son clashing, both mortally wounded, Camelot crumbling around them. It’s got that Greek tragedy vibe where you almost pity Mordred, even as he wrecks everything.
Modern adaptations can’t resist tweaking his motives, though. Some versions make him a bitter outcast (looking at you, 'Fate/Zero'), while others lean into the 'child of incest' angle for extra shock value. Personally, I think his ambiguity is what makes him compelling—was he born evil, or did Arthur’s neglect create him? Either way, he’s the perfect narrative grenade to toss into the Round Table’s idealism.