The clip was premiered at Comic-Con, and later revealed online by someone who had videotaped one of the screens at the annual event.
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'The Wolf Of Wall Street' star Margot leads the Squad
Now, the official trailer has been released - and it’s even more glorious in high definition.
Margot Robbie, who plays Harley Quinn, takes centre-stage in the clip, and we’re also given a first look at the (quite frankly terrifying) Jared Leto as The Joker.
Batman also features, in a high octane chase scene, as does Will Smith, who plays Deadshot.
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The cast are still filming the movie
Cara Delevingne makes a brief appearance as Enchantress too, as the squad is assembled.
The cast are currently filming the movie with director David Ayers in Toronto, and sadly, there’s still over a year to go before the blockbuster hits cinemas.