Guy Sharp (nephew) Gal Sharp (niece) Ida Rebuff (niece) Chet Onassiser (son)
Elsie Onassiser (nee Copper) is a sim in the town of Ribbon Heights. She is the half-sister of Kendra Copper.
Elsie is born in the second set premiere. Her mother, Agnes Copper] had a significant age difference between her father Jack Copper. Jack was an Elder when Elsie was born and Agnes was a yung adult. Elsie has a half-sister, Kendra Copper, from Jack and Ruth's failed marriage years ago. Jack quickly neglects Elsie as a baby but when Agnes talks to him he begins to pick up the slack.
In the third set, Jack dies and Agnes becomes a young widow and single mother. Elsie becomes a toddlar and is too much for Agnes to handle. Kendra helps out when she can but Agnes soon leaves Elsie with Kendra as she leaves town.
In the fourth set, Agnes returns and claims Elsie. Kendra refuses to allow her to have her back as she abandoned her. Elsie wishes to go back with her mother. Agnes then tells Kendra that she is only hanging on to Elsie because Andre took Guy. Agnes and Elsie are then reunited. They then decide to move away.
In the fifth set, 5 years later, Elsie quickly becomes a teenager and lives with Kendra and Andre. She causes trouble and is very rebellious. Eventually we learn that Elsie and Agnes are feuding because Agnes has re-married, to Ambrose. Kendra talks Elsie in going back to live with her mother and step-father.
In the sixth set, Elsie and Agnes return to town and tell Kendra that Elsie wishes to live with her. Kendra reluctantly agrees and lets her come live with them. Eventually Elsie begins to date Paula Lillian's teenage son, Beck. Kendra is shocked when Elsie tells her that she loves Beck.
In the seventh set, Beck and Elsie break up and she is devestated. Causing more problems for Kendra as she deals with Ilyse.
In the eighth set, Elsie doesn't appear that much. She is getting over her break-up with Beck.
In the nith set, 2 years later, Elsie has aged into a young adult, married to Armand Onassiser, left town and currently pregnant. Agnes later visits Ribbon Heights on her way to be there for the birth. It is revealed that Agnes and Ambrose divorced.