Heather Suzanna Abadeer was born in the Nightosphere to upper class parents. Due to her uncle being Hunson Abadeer, Heather enjoyed a privileged life which left her very spoiled. Growing up, she was always made to hang out with her cousins, Marsha, Damian, and Sarah, as they were around her age. Heather took the opportunity to torment her cousins from bullying and harassing her twin cousins to doing whatever she could to get Sarah in trouble. Despite this, she was able to get away with treating them badly which added to her entitlement.
Even when the playdates stopped, Heather didn't stop antagonizing Marsha. During her teen years, Heather and her group of friends would often harass Marsha whenever she snuck out of Hunson's mansion. After her cousins ran away, Heather would go on to spread multiple rumors in regards to her cousins that would spread to several of the upper class of demons. Heather enjoyed being her parents' only child for a few more hundred years until her little sister, Emma was born.