Arrowverse visual architect Andy Poon has shared some concept art for the villains of the "Crisis On Earth-X" crossover, in addition to The Ray, on his Instagram.

The crossover, which aired across Supergirl, Arrow, The Flash and Legends of Tomorrow this week, saw the heroes of the DC Comics TV Universe unite to take on evil Nazi doppelgängers. The crossover event also saw the live-action debut of the DC superhero The Ray, who previously starred in an animated series, set in the Arrowverse, which aired on the online-only CW Seed.

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Take a look at some of Poon's concept art in the post below.

Have you guys watched the Crisis on Earth X yet?! It’s prettty much a 4 hours Justice League movie! So proud of all crews and glad I got to be a part of it! Here are little peaks at the new characters I did concepts for costume designer Maya Mani on the crossover. Also awesome animated designs on the freedom fighter series on @cwseed by @philbourassa ! @cw_arrow @cwtheflash @cw_legendsoftomorrow @supergirlcw @dccomics #theray #overgirl #darkarrow #blitzenflash @stephenamell @cavanaghtom @melissabenoist @russelltovey #concept #illustration #costume #design

A post shared by Andy Poon (@andypoondesign) on

This year’s four-part crossover “Crisis on Earth-X” aired across two nights, beginning Monday, Nov. 27 with Supergirl and Arrow (on a special night for one week only) and concluding Tuesday, Nov. 28 with The Flash and Legends of Tomorrow.