Deborah Harper

Deborah Harper is the sister of Helena Harper featured in Resident Evil 6.

History
Deborah and her sister were shown to be held by Derek C. Simmons in an unidentified location for reasons unknown. Helena tried her best to keep her terrified sister calm and reassure her. Under Simmons' command, men come to take Deborah away, leaving Helena to futilely beg and plead for them to let her go. Helena offered herself to Simmons in exchange for her sister. Her pleas did nothing as Deborah was dragged away to a then-unknown fate.

Mutation
At some point while in Tall Oaks, Helena, Leon, and Ada encounter an egg that soon hatches, revealing the mutated Deborah. As Helena apologizes to her sister and attempt to comfort her, Ada shoots Deborah with her crossbow. This triggers a battle with the mutated Deborah Harper as the three fight to survive.

Biology
When found hatched from the egg, the mutated Deborah is found naked though she has no truly notable anatomy. Her skin has taken on a sickeningly pale green tone, seeming considerably slimy at times. Long trails of veins are also very evident, most notably across her face where they are uncharacteristically red. Her speed and agility is above the average human level and, as acknowledged by Leon, she is exceptionally strong.

A primary and seemingly controllable mutation found in Deborah's new form are very large segmented and jointed appendages, resembling the legs of an arachnid. The newly-grown appendages are sharp enough to be easily capable of slashing and even impaling an unwary person.

Behavior
Little is known about Deborah's behavior after her mutation, though it is apparent she either has no recollection of her relation to Helena or is incapable of restraining herself. The only other behavior shown is an obvious over-sexualized and suggestive demeanor.