Swen always said that his favourite character from DOSII was Lohse, the bard who was sometimes possessed by an evil entity very into commiting atrocities and making people riot and murder... and it looks like the Dark Urge is the even darker version of Lohse, maybe a Lohse who fell down the total posession hole and that "thanks" to the tadpole is gaining some control over her faculties.
The player can choose to lean into that bloodthirst, OR to try to fight all those voices and urges, like Lohse did.
For those who played Blood in Baldur's Gate, the similarities between
the top hat redcap, a "voodoo doctor", and the doctor who wants to puppeteer Lohse in DOSII are also there, down to the bloodthirsty god behind them
Even in EA as an OC, you get these glimpses of "kill, maim, blood!" that everyone thought were connected to Astarion, but now we know it's a psychic connection to this Dark Urge person, wherever they are, probably through the telepathic tadpole.
I love it. I love the idea of a dark, dark Lohse. I thought that I would for sure play as a goodie to shoes OC, but the first run is going to be a temptation-filled Dark Urge one. So happy.