Spoilers for Deus Ex: Mankind Divided - A Criminal Past follow!
Danny Brewer, better known as Red Shoes, is an inmate at the Penley T. Housefather Correctional Facility in the year 2029. He is working with Flossy, an inmate from cell block A who seeks to organize a revolt among the inmates.
If Adam Jensen obtains an altered biocell, Flossy will tell Jensen to give the biocell to Red Shoes, who is locked inside a confinement cell in cell block's yard.
Depending on the player's choice, Adam Jensen can give Red Shoes the altered biocell, allowing him to cloak past the prison's security measures, or keep it to himself and force Red Shoes to come up with a different escape plan.
If the altered biocell is given to Red Shoes, Stenger will later Jensen that Red Shoes managed to kill security guards on duty to gain access to the biocells in the prison's lock-up. Furthermore, the inmates will control the bottom floors the prison's Tower during the riot. Otherwise, if the altered biocell is not given to Red Shoes, the bottom floors of the Tower will be entirely controlled by the prison's security.
Although he is not encountered during the riot, several of the inmates make references to Red Shoes and his involvement in the uprising. If the player decided to give him the biocell as asked by Flossy, the inmates in Observation will be discussing Red Shoes, with one claiming that he broke free and started handing out biocells, allowing his fellow inmates to use their augs to the fullest extent.
- If Jensen gives Red Shoes the altered biocell, Red Shoes will dance in the yard cell while singing, "Little red shoes. Little red shoes. She gave up a leg for little red shoes. Now she dance all night and she got nothing to lose."
- The line that Red Shoes sings is a reference to the Red Shoes, an 1848 fairy tale and 1948 film adaptation of the same. In the fairy tale, a girl puts on magic red shoes, which causes her to dance non-stop. Even after her feet are amputated, her feet continues to dance in the red shoes. In the film, a ballerina becomes the lead dancer for a ballet based on the fairy tale. Later, she dies when her shoes lead her off a balcony.