The presence of the playful tabby is known to keep giant rats and mole rats out of Arefu. She can occasionally be seen chasing a mole rat or a giant rat around the settlement. The locals believe that Mitten's presence invokes an instinctual fear in the mole rats and giant rats who recognize her as a predator despite their increased size.
Martha states that she found Mittens injured and half-dead of starvation in the wasteland. She brought the malnourished feline home and nursed her back to health. Since then the two have been inseparable.
- The image used to represent Mittens remains the sole property of Bethesda Game Studios. It is used to illustrate a fan-fiction character and does not constitute actual in-game content.