Lego DC Super Heroes: Justice League - Attack of the Legion of Doom

Lego DC Super Heroes: Justice League - Attack of the Legion of Doom (marketed as Lego Justice League: Legion of Doom) is a 2015 animated superhero comedy film based on the Lego and DC Comics brands. It is the fourth film in the Lego DC Comics film series. Actors from various (also copyrighted) DC properties reprise their respective roles, including Mark Hamill as The Trickster, Nolan North as Superman, Khary Payton as Cyborg, John DiMaggio as The Joker, Josh Keaton as Green Lantern, Kevin Michael Richardson as Black Manta, Grey Griffin as Lois Lane and Tom Kenny as The Penguin.

Released theatrically on August 28, 2015, the film received mixed reviews, who praised the animation but criticized the script and runtime. However, the film was a massive box office success, grossing $68 million against a budget of $6 million.

Box office
In the United States and Canada, the film was released alongside War Room, No Escape, and We Are Your Friends, and was projected to gross $5-10 million in its opening weekend. However, after grossing $9 million on its first day, including $1 million from Thursday night previews, projections were raised to $20-25 million. The film debuted with $20.5 million, finishing first at the box office and knocking off holdover Straight Outta Compton. In the film's second weekend, it grossed $13 million, staying at first, and in its third weekend, the film grossed $8 million, dropping down to third.

Critical reception
On Rotten Tomatoes, the film holds an approval rating of 37% based on 132 reviews, with an average rating of 5.3/10. The site's consensus reads, "Attack of the Legion of Doom proves that wonderful animation can't save a film from a lazy script undermined by a short runtime." On Metacritic, the film has a weighted average score of 41 out of 100, indicating "mixed or average reviews". Audiences polled by CinemaScore gave the film an average grade of "B-" on a scale of A+ to F.