Name: 51
Species: kangaroo rat
Gender: female

51 is a clone of Twapa, created by X-I to be a computer whiz. When she came face-to-face with Twap, however, the desire for a life bigger than the corridors of the lab she lived in was awakened and she became the first clone to turn against X-I, helping Twapa to completely destroy the facility in which she once lived. Since then, she has kept in contact with Twapa, and strives, with the other clones, to find a way of preserving their lives which are drastically shortened due to all the genetic manipulation that was used to design them.