Here are all the clones on 'Orphan Black' you need to know

Warning: Spoilers from the first four seasons of "Orphan Black" ahead.

"Orphan Black" embarks on its fifth and final season on Saturday.

At the center of the show is the building mystery behind a top-secret cloning project and Emmy-winning star Tatiana Maslany's portrayal of more than a dozen clone characters. Additionally, there are at least seven male clones played by Ari Millen.

With all those clones running around, we thought we could help you by creating a guide to the doppelgangers.

The show revolves around Sarah Manning (Maslany), who discovers that she is the result of a secret British cloning operation, Project LEDA. Over the seasons, we found out that the DNA for all the clones or "orphans" - even the males ones, which were part of a splinter program called Project Castor - can be traced to one woman, Kendall Malone (Alison Steadman).

Here's a who's who for all the clones on "Orphan Black":