Marceline Nivans is the daughter of Piers Nivans and Helena Harper..
Marceline is a cheerful and adventurous type of a person, but despite of that energetic persona, she can be serious sometimes when it comes to her twin sister,Calliope.
Marcy has a straight dark brown hair,a hazel eyes and a fair skin.She appears to be skinny and flat-chested girl giving her an appearance of a boy.
Marcy's family are close each other.Marcy's one of her closest familiy member is her father,Piers...Marcy was also the cousin of Tavros and Rufioh,Marcy treat them as her brothers..She's the older twin sister of Calliope Nivans.
Marcy adopted a chow chow named Finn,she adopted him after her first' pet's death..
.She has also a big rivalary to Abigail Cage due to her mouth problems that drives her mad and intention to whack her face..
Her romantic interest remains unknown