Tardis — formally, Tardis Data Core, the Doctor Who Wiki — is a free Doctor Who reference that is being written collaboratively by the readers and editors. Our goal is to become the largest, most reliable, and most up-to-date encyclopedia about everything related to the Doctor Who universe. Most of our topics are written as they might appear if discovered in an encyclopedia within the DWU. In other words, we try to treat the subjects of our articles as if they were "real". As long as it's been mentioned in a valid source, you'll find a page about it in the Data Core!