M. Burrow

 was a young Vault-Tec scientist employed at Vault 81 in 2077.

Background
When the October 23, 2077 drill began, the beta alert was soon upgraded to alpha and the Great War came. Due to the Overseer's sabotage, none of the science staff received a notification about the drill. However, three researchers showed up: Kenneth Collins and Jim Flint reached the Vault from the Fens with the general population, while the overachiever M. Burrow was already on site. They reported to the research area and were sealed inside. This meant that the danger to the residential population still existed.

Although there were only three of them, ensuring that the generations-long research plan would die out, they had state of the art equipment, centuries' worth of supplies, and the Contagions Vulnerability Robotic Infirmary Engineer, meaning that with even their limited manpower, they could still be a threat to the residential population. To compensate, Collins upgraded and modified Curie, from a customized Miss Nanny, into a fully fledged lab assistant. He provided her with a custom personality, loading the databanks with every great body of work he had to make her more life-like, more... Human. And so, CVRIE became Curie. With her help, the work picked up the pace and quite soon, the Phase I trials began. When notified of it, Olivette was mortified and played for time, while maintaining an aura of camaraderie, taking care to not reveal his intentions. While the mood among the three researchers remained stable thanks to Collins and Curie, they still had access to the nozzles and could release the pathogens for a Stage III trial - or worse. When a minor mishap with the mole rat population was resolved and stage II was progressing rapidly, Olivette made the decision.

The Overseer personally sabotaged the delivery nozzles inside every residential quarter and room on their side of the Vault. Then, when the researchers began to notice (Burrow, specifically), they disconnected the only terminal that could communicate with the science team and dumped it in the reactor chamber, near the sealed backup entrance into the science section. Sealed in the research wing, the scientists grimly continued their work, never to see the light of day again. Curie would become their inheritor, watching as they fell one-by-one. Flint was killed when a mole rat named Clyde escaped his cage. Then Collins and finally Burrow, both dying of old age. Burrow specifically expired from a severe cardiac arrest at 5:01 AM, as his last request he was cremated and placed alongside his colleagues. She interred them and continued the work.

Appearances
is mentioned only in Fallout 4.