The first trailer for Birds of Prey offered a peek at Margot Robbie’s return as Harley Quinn in Warner Bros. Pictures’ upcoming movie that will add a long list of new heroes and villains to its DC Extended Universe.

The trailer puts the spotlight on Robbie, but it also features the debut of quite a few live-action versions of DC Comics characters — some of them familiar and others, well … a little less so.

In the interests of helping you sort out who’s playing whom in Birds of Prey — aka Birds of Prey (and the Fantabulous Emancipation of One Harley Quinn) — here’s a primer on the film’s primary cast and the DC Comics characters they’re playing.

Margot Robbie as Harley Quinn

First introduced in 2016’s Suicide Squad, Harley Quinn is a former psychiatrist who developed a relationship with the psychotic killer The Joker (Jared Leto) and became his similarly deranged partner in crime.

Birds of Prey is set after the events of Suicide Squad and picks up after Harley and Joker break up.

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