Ivy

A cheerful and friendly electricity-powered android maid who's always helpful and upbeat. She quickly makes friends with Sumire and shows her the ropes of working as a maid. Her and Rose seem to share a past.

She was constructed by one of the demon king's subordinates, Sophie. However, due to performing below expectations in a number of her tests, she was thrown away and meant to be incinerated, with Sophie seeing her unfit to become an assassin. Rose would then go on to rescue her, with the two living together ever since.