Concept artist Andy Poon offers a glimpse into what could have been, sharing a look at some early concept art for "The Flash's" first evil speedster of the third season, the Rival.

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As you can see, the version Poon and costume designer Maya Mani envisioned was a little less colorful than the one Todd Lasance brought to life in the Season Three premiere, "Flashpoint," and a little more sinister. The mask covers the villain's entire face, crackling with Speed Force energy, rather than the open-faced cowl Lasance wore on television.

Happy Friday! Concept of The Rival for The Flash season 3, costume design by Maya Mani. #DC #CW #TheFlash #FlashPoint #TheRival #Speedster #costume #concept #illustration A photo posted by Andy Poon (@andypoondesign) on

Poon also shared a look at his and Mani's design work for Wally West's (don't call him Kid) Flash costume, as well as Black Siren, the Earth 2 evil doppelganger of Katie Cassidy's Black Canary.

I'm changing throwback Thursday to Flashback Thursday. The Flash season 3 premieres this week so here is a concept of Black Siren, Earth 2 evil doppelganger of Black Canary for The Flash season 2. #LaurelLance #BlackCanary #BlackSiren @dccomics @cwtheflash #costume #concept #illustration #KatieCassidy #earth2 #zoom #doppelganger A photo posted by Andy Poon (@andypoondesign) on

Happy Friday! Concept of Kid Flash for The Flash season 3, costume design by Maya Mani. @dccomics @cwtheflash #TheFlash #FlashPoint #WallyWest #Speedster #costume #concept #illustration @keiynanlonsdale A photo posted by Andy Poon (@andypoondesign) on

Starring Grant Gustin as the Scarlet Speedster, "The Flash" airs Tuesdays at 8 pm ET/PT on The CW. The series also stars Jesse L. Martin, Tom Cavanagh, Carlos Valdes, Candice Patton, Danielle Panabaker, Keiynan Lonsdale and more.