I know this is old hat to just about everyone, but I'm more and more enjoying Imogen and Laudna as not just a mirror of the Briarwoods but also, and perhaps even more so, as a foil.

Laudna may be the death magic goth with a necromancer in her head, but out of the two of them, Imogen is the stronger mirror of Delilah. She’s the one with the undead lover, the one prepared to break the world by risking Delilah's return as long as it got her Laudna back, the one with the drive and the thirst for power and knowledge. Laudna meanwhile, while also tempted by power, is mostly just along for the ride, deeply devoted to Imogen over anything or anyone, alive only because Imogen found a way to resurrect her. They have looked each other in the eye, recognised the same seeds of darkness and the possibility of giving in, and said 'Together either way'.

But they are also in many ways a direct subversion of the Briarwoods. Delilah and Sylas both seemed perfectly happy to have made a pact with Vecna and revelled in the power he granted them, even knowing the disaster he would bring and the horrific acts he asked of them. Imogen and Laudna meanwhile, while tempted by power and openly voicing said temptation to each other, actively fight against it. Imogen was prepared to risk Delilah's return for the sake of Laudna's resurrection, but she would've fought her every step of the way. She's tempted by the power and knowledge of Ruidus, but also prepared to give all of it up if it means saving the world, because unlike Delilah she chooses to care about people other than herself and her lover. Laudna may be prepared to follow Imogen into hell itself, but she may also be what would lead her back out, because unlike Sylas she doesn’t just recognise darkness in her lover, she wants to fight it alongside her.

This is what I mean when I say these two hold the potential for great darkness. They wouldn’t function as a mirror and a foil of the most romantically iconic critical role villain duo if they didn't. But holding the potential for darkness and corruption also means holding the potential to resist and fight said darkness at every turn. It gives them the potential to choose kindness and struggle while still keeping a little bit of that darkness in their hearts, because without it, they never would have found each other.