Before Michael Bay's Teenage Mutant Ninja Turtles got off the ground, the producer met with several different visual effects houses to determine which companies will work on the film. Over the weekend, concept artist Anthony Francisco shared the concept artwork he made for Illusion Industries, as a part of the company's pitch to work on the project.

While the company wasn't hired by the producers, this artwork shared on Anthony Francisco's Facebook page is much different than the finished look of these heroes in a half-shell. Take a look at the illustrations below, along with the artist's comments.

<strong><em>Teenage Mutant Ninja Turtles</em></strong> Concept Art 1

Related: TMNT Meet Ghostbusters Comic Crossover Is Getting a Sequel

<strong><em>Teenage Mutant Ninja Turtles</em></strong> Concept Art 2

<strong><em>Teenage Mutant Ninja Turtles</em></strong> Concept Art 3

<strong><em>Teenage Mutant Ninja Turtles</em></strong> Concept Art 4

<strong><em>Teenage Mutant Ninja Turtles</em></strong> Concept Art 5

<strong><em>Teenage Mutant Ninja Turtles</em></strong> Concept Art 6

<strong><em>Teenage Mutant Ninja Turtles</em></strong> Concept Art 7

"When Martin Astles (Head Sculptor at Illusion Industries) told me that Michael Bay wanted to do a TMNT movie, I started doing these concepts to help Illusion get the project. We did get a chance to meet with the producers and the meeting went well but we did not get the gig. So in a way these images you see have just become fan art coz I did not get paid for it, I just wanted to work on it so bad :) . This was back in 2011."

The city needs heroes. Darkness has settled over New York City as Shredder and his evil Foot Clan have an iron grip on everything from the police to the politicians. The future is grim until four unlikely outcast brothers rise from the sewers and discover their destiny as Teenage Mutant Ninja Turtles. The Turtles must work with fearless reporter April and her wise-cracking cameraman Vern Fenwick to save the city and unravel Shredder's diabolical plan.

<strong><em>Teenage Mutant Ninja Turtles</em></strong> photo 1
<strong><em>Teenage Mutant Ninja Turtles</em></strong> photo 2
<strong><em>Teenage Mutant Ninja Turtles</em></strong> photo 3
<strong><em>Teenage Mutant Ninja Turtles</em></strong> photo 4
<strong><em>Teenage Mutant Ninja Turtles</em></strong> photo 5
<strong><em>Teenage Mutant Ninja Turtles</em></strong> photo 6