The Walrus is the criminal alias used by Moe Blum, an enemy of Batman. Originally he was known to be an enforcer for the Black Mask, but presumably was forced to find other avenues of work after the crimelord's untimely demise. Eventually, he joined the Wonderland Gang at the same time as the Carpenter, with the duo naming themselves after another duo of the characters featured in Lewis Carroll's novel Alice in Wonderland.
The Walrus was created by Paul Dini and Dustin Nguyen, first appearing in Detective Comics #841. (2008)
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