I adopted the twenty one pilots wiki after the founder, NatalieN, appeared to have left and not logged in for almost two years. I have done a lot of work on this wiki, adding many pages for songs, tours, albums and videos as well as generally cleaning up the site.
If you're interested in becoming an admin, I will only consider you if you have contributed more than 50 helpful edits over at least seven days without extended periods of absence. These are similar to the Wikia rules for adoption and are to ensure that people who are added are dedicated to making this wikia a good and helpful place.
As for contributing to the wiki, there is plenty you can do without being an admin! You can add pages, photos, videos and information as many times as you like! If you have knowledge about twenty one pilots and can provide sources, then please by all means edit away! A wiki is a collaborative effort and will benefit from multiple authors.
If you have any questions about me or becoming an admin or about edits I have done to your work, please contact me on my message wall.