Elda Marker is the mother of Henry Marker and the paternal grandmother of Karin Maaka. Elda was born in Transylvania, where she fell in love with the human Alfred. After Alfred betrays her due to circumstances beyond their control, Elda curses humanity and moves to Japan, where she is imprisoned by Carrera Marker in her coffin prior to the birth of Karin Maaka. Due to Alfred's betrayal, Elda does not show respect for humans, and drinks blood as she sees fit, leading the other Maaka family members to perceive her as a monster. She is generally loathed by Carrera, possibly based on the classic mother vs. daughter-in-law conflicts. Elda is the only person feared by Ren, whom she almost killed with affection when he was but four years old. She managed to get on Anju's bad side within five minutes after they were introduced - by hugging Karin and crushing her breasts. Only Henry and Karin seem to be concerned with Elda's wellbeing, although even they are taken aback by some of her actions.