FANDOM

Welcome to BioShock Answers. What would you like to know?

It's just letter D/d (in Subject Delta's case, D).

For additional information, you can read Wikipedia's article on the letter delta.

Ad blocker interference detected!


Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.