Concept Artist Jerad S. Marantz has posted some of the character concept designs he created for the Teenage Mutant Ninja Turtles movie. Jerad has also worked on films such as Guardians of the Galaxy, Maleficent, Thor: The Dark World, Riddick, Snow White and the Huntsman and The Amazing Spider-Man.
Link: jeradsmarantz.blogspot.com
All images © Paramount Pictures.