Sidney Crosby gave fans of the Philadelphia Flyers even more reason to loathe him.

During the Pittsburgh Penguins’ Halloween party on the weekend, Crosby dressed up as Rocky Balboa — only one of the most beloved fictional characters in Philadelphia.

Teammate Evgeni Malkin, who went dressed as a vampire, posted the picture on his Instagram account.

Philly was not amused.

So, Penguin Sidney Crosby decided to raid Rocky Balboa's closet for Halloween <a href="http://t.co/hazFjssD5S">http://t.co/hazFjssD5S</a> <a href="https://twitter.com/hashtag/NotAmused?src=hash">#NotAmused</a> <a href="http://t.co/LAWl6vinhE">pic.twitter.com/LAWl6vinhE</a> —@PhillyDailyNews

The Flyers visit Pittsburgh on Wednesday. The timing is perfect.

Sidney Crosby might be -- MIGHT be -- trolling Philadelphia with his Halloween costume. <a href="http://t.co/f424o4Y6KC">http://t.co/f424o4Y6KC</a> <a href="http://t.co/eMrXm5LS3p">pic.twitter.com/eMrXm5LS3p</a> —@SBNation

Flyers fans may not appreciate Sidney Crosby's Halloween costume <a href="http://t.co/eEg8LNUThq">http://t.co/eEg8LNUThq</a> —@mattbrigidi