(Capcom's primary storyline)
D-Type was a line of human bioweapons developed by The Connections sometime prior to 2014. The manufacturer created its line of weapons by altering the genome of human females while in their embryonic stage, and their age accelerated after birth to give the approximate appearance of a ten-year-old girl. The decision behind the appearance was to allow them to infiltrate cities posing as lost children or refugees.
A total of eight D-Types were created by The Connections: Dana; Dahlia; Darlene; Dorothy; Dolores; Diana; Daniella, and Doris. Of these, three were killed in an apparent murder-suicide; four died of natural causes, and another was killed by her creators after being branded a failure. Four of the bodies were transported on the Annabelle with Eveline, the first E-Type, when The Connections abandoned their lab. These were two unidentified newborns; Dolores and Dahliia. When the ship ran aground in the Louisiana bayou, they were recovered by the Bakers. Dolores and Dahlia proved useful in the creation of a medicine to resist Eveline's control over infected people.