|First appearance||Different and the Same|
|Sibling||Piper (possible twin sister)|
Piper has a dream in which she meets Debbie, who says she was separated from Piper at birth.
In Piper's dream, Debbie is next to Piper on a table being examined in a Company facility. Later, Debbie waves and calls out to Piper from down a hallway. Debbie guides Piper through the facility as they are chased by Mr. Bennet and the Haitian. Finally, they reach a couple windows and they each try to open one. However, only Piper can open hers, and only half-way. Debbie tells Piper that she is her sister and was separated from her at birth, that the facility is her home but it doesn't have to be Piper's. Debbie is then dumbfounded as Piper unnaturally squeezes through the half-open window and tells Piper she cannot follow her. Debbie is then grabbed and dragged away by Mr. Bennet and the Haitian.
- Debbie introduces herself to Piper as her long lost sister (Different and the Same). This takes place in a dream, though the dream is somewhat manipulated by Sanjog Iyer. The validity of Debbie's claims are unclear. Further, Piper's mother doesn't seem to have any recollection of giving birth to Debbie. Whether or not the children were delivered while the mother was unconscious (e.g. by cesarean section) or her memory was modified is unknown.
- For other uses of Debbie, see Debbie (disambig).