Platinum concept artist Cho posted some cool looking concept arts of the boss character Mistral and sub-characters Cyborg Soldiers in Platinum's blog. Here's the full translation and images:
"Up until now, the world and characters of Metal Gear have been designed by Yoji Shinkawa of Konami’s Kojima Productions. I’m sure this is something most of you already know; Shinkawa-san has a lot of fans from around the world, myself included. As a designer, the biggest challenge I faced during this project was to create characters that would belong to both the established Metal Gear Solid universe and a fast-paced action game like Rising.
As a seasoned fan, I felt I already had a decent understanding of Metal Gear, but now that I had to look at things from the eyes of a creator, I went back and played through the series one more time. My time for clearing The Boss Extreme in MGS4 was 3 hours and 2 minutes, in case you want to know."
Initial Concept Design of Boss Character Mistral
"At the start of development, we were free to throw out any ideas we thought would work well with Metal Gear Rising’s world concept. This is probably the best part of the design process; ideas really seem to just flow. It is the time where anything you hit upon that you think might be good you have to push for. After this stage, you start working on basic design layout.
Mistral’s initial concept came from Kenji Saito, Rising’s director: “I want tendril-like-objects to come out of this girl, and
I want her to fight with them like a whip!” In previous MG titles, most female characters follow the formula of a mysterious, alluring femme fatale with a tragic past. I wanted to design Mistral in the same mold."
More Mistral designs.
"I thought about having a cyborg-enhanced body, like Raiden, and a slightly sick-looking face would work best for her design. More than that, however, I wanted something somewhat perverse/weird, so I started rethinking her base design and tried something new."
Mistral done in a Mannequin theme.
"Then we put about a dozen dwarf gekko arms on her that she could detach and recombine to create her main weapon. After this was approved, we finally had Mistral’s prototype. Next, we did some fine tuning by iterating on colors and cyborg parts. Personally, I wanted Mistral to be wearing a helmet, but Saito-san said he didn’t want to hide her face, so we lost it. The final design we decided on was a more “human,” sexy Mistral."
Mistral's Main Weapon : Dwarf Gekko Arms!
The final image has become more sensual and sexy.
"Once we decided an overall look, we started on details. Rising is full of cyborgs and other mech-based characters that need to be carefully detailed, otherwise things fall apart in 3D-modeling."
Final full body image of Mistral!
Cho was also in charge of the sub-characters: Enemy Cyborg Soldiers
Some concept arts that did not appear in the game.
"So there is a glimpse into our design process for a character. While Mistral is an enemy character in Rising, she is one who bears a tragic past that players should be able to feel for. I hope you’ll like her when you play the game.
It won’t be much longer until the release!
Be sure to get your hands on it."