Brooklyn Nets
After the Nets' move to Brooklyn, the team introduced a new superhero mascot named BrooklyKnight (a pun on the demonym "Brooklynite") on November 3, 2012. In his first appearance, he was lowered from the ceiling of the Barclays Center amid sparks and fanfare and introduced by Nets PA announcer David Diamante: "Here to defend Brooklyn, he's the BrooklyKnight." The mascot was co-created by Marvel Entertainment, a sister company to NBA broadcasters ABC and ESPN. The character also starred in 32-page comic book published by Marvel titled "BrooklyKnight #1", written by Jason Aaron with art by Mike Deodato. After the Nets' second season in Brooklyn, the BrooklyKnight mascot was retired.
Brooklyn Eagle
This occurred around the same time as the National League baseball team, the Brooklyn Dodgers (formerly the "Trolley Dodgers"), who played at Flatbush's Ebbets Field, shocked the city and joined the rival New York Giants at the old Polo Grounds in Manhattan in moving to the West Coast and becoming the Los Angeles Dodgers and the San Francisco Giants. The loss of both primary national icons of the town's identity within two and a half years sent Brooklyn into a psychological slump, which even the replacement New York Mets in 1962 could not quite resurrect.