 The designs wanted it to have a rough-draft appearance and look like a "work in progress", while incorporating elements of the later models.As a result, several concepts were considered, combining the parts of the Rosie and Bouncer models, before the developers settled on an appearance more akin to the former, but retaining the heavy drill of the latter.In the "Protector Trials" DLC, the player plays as an unknown Alpha Series Big Daddy and in the "Minerva's Den" DLC the player plays as Subject Sigma.