Seranas

"I'm gonna cut your fuckin dick off!"
Seranas was a member of the Original Group, who were the party of the Lost Mine of Phandelver campaign, who joined in during the second session of LMoP alongside Durnehviir. She was played by CrapBag. 
She is either a human or half elf rogue and was a member of the Zhentarim. It is believed that she possibly had a relationship with her dragonborn companion Durnehviir. She is famous/infamous for indirectly creating the Russian Lady, an iconic character who would ultimately be the original party's bane and would slay the entire group. She is also famous/infamous for castrating her fellow adventurer, the half-orc Gogdor, during their altercation in Cragmaw Castle. At the end of the incident, she was forced to pick from the Deck of Many Things by Omniscidor's God as a punishment for what she did to Gogdor, picking the card 'flames'. After the birth of Gogdor's daughter Danielle, as she grew older Seranas nurtured her to go against her father/mother and taught the young half-orc in the ways of being stealthy and mischievous. 
She was slain by the Russian Lady during the final session. 
Her name is a mash up of two female rogue like characters from fantasy video games, this being Serana the vampire from 'The Elder Scrolls V: Skyrim' and the other being Sylvanas from 'World of Warcraft'.