I love peeling back Irenicus's layers because his story in 'Baldur's Gate II' is one of those rare villain origin arcs that feels half-tragedy, half-horror. In the game we learn he was once tied to the elven city of Suldanessellar and that whatever he did there earned him a violent punishment: exile and a stripping away of something essential to him. The game makes it clear he was obsessed with reclaiming elven power and immortality, and he pursued that goal with a scientist's ruthlessness—experiments, theft, and cruelty that crossed moral and sacred lines. His sister Bodhi is part of that dark orbit; she helps him in the early kidnappings, which gives his story a mix of family loyalty and mutual corruption.
What really hooks me is how the writing lets you sympathize for a beat before pulling the rug. Irenicus isn't just a power-hungry mage; he's someone who believes a monstrous project is justified by a lost identity. He targets your character because you are useful—either as a vessel, material, or link to things he needs to restore himself. The Suldanessellar sequences peel back how the elves punished him and the costs of his obsession. It becomes a study of pride and the ways grief can calcify into cruelty. I always walk away feeling bad for him for a second, then furious at the lengths he went, which is exactly what great tragic villains do for me.