"Relatively" is the key word that describes Marley. When asking any question about Marley, the answer always seems to come up a qualified, "it depends" on who you ask or how you ask the question. Some examples: How old is Marley? The simple answer is roughly 23, relatively speaking. Marley says her current physical aging stopped in her 20's or early 30's where it will remain for a long time in the foreseeable future. A witness to her birth, Cousin Anne, says it was almost 15 years ago but in a very real biological sense, Marley could be in her early 80's or 90's. What is Marley? The simple answer is relatively speaking, a human electronics expert 99.3% (she is a closer cousin to the human family than the ape family). At least her DNA is and always was human. Just a few strands of which were adjusted or enhanced which is the reason why she fights against H.A.R.D. Why in the VR does Marley change her name to Dolly? "Baa," she sheepishly replies. It's an inside joke.