|Real name||Deever Tweed|
|Based in||Gotham City|
|Height||5 ft 9 in|
|Appearances||Arkham Asylum (referenced only)|
Tweedledum, whose real name is Deever Tweed is a supervillain who operates with his cousin Tweedledee, Dumfree Tweed.
The two partners share a uncanny resemblance to each other, and both shared a desire for a life of crime and fixation on Lewis Carroll's novel Alice's Adventures in Wonderland. They teamed up and modeled themselves after Tweedledum and Tweedledee from the book, planning absurd schemes to trap Batman.