"This image shows two (really bad...) 3D models shaped like Gang Beasts characters I made, the one on the left is a red "play-doh" character (currently playable in-game) while the one on the right is an adaption to the current characters' shape of an old concept art of a blue "Luchador" character (wich is shown in a light blue frame on the right).
It's just something I wanted to do while wondering how the human characters would look like when they get added to the game (even if they were supposed to actually resemble their look in the artwork as the current model got added later), I made some little changes for making the costume fit the new shape (I based the "style" of these changes on another imaged posted by Boneloaf wich I'll post a link to in this post); while it's just a personal interpretation of the human characters, I think that they wouldn't be that bad if they looked like this. The characters will also have different mouths, body/hair color and neutral expressions (for example some look like they're heavily drunk while others show a big smile, ready to get all of their teeth broken by a punch. Yes, visual damages are planned but the devs said they'll be pretty cartoonish, there will be things like black eyes and broken teeth, nothing too excessive; also the devs said they don't want to show blood, with the only exception of a little spit of it from characters' mouth if they get a really strong punch, kinda like in boxing movies...)

Here are some links to images regarding the planned characters' look:

1) Human characters concept art - Part 1 (OUTDATED)
http://1.bp.blogspot.com/-l_2QY-SnM5M/Uv1vSy6AgaI/AAAAAAAAE18/A27WpvIvOhU/s1600/GB-gl-Characters-1.jpg

2) Human characters concept art - Part 2 (OUTDATED)
http://3.bp.blogspot.com/-WeH-XMV3OUs/Uv1vTO09-yI/AAAAAAAAE2A/-6U5m3Dlf6A/s1600/GB-gl-Characters-2.jpg

For reference the characters were originally supposed to look exactly like that as you can see in this video:
https://www.youtube.com/watch?v=1NERBB9xIFg
However it appears that the design was scrapped relatively early on in favour of the current one.

3) Human guy in swimsuit (IN-GAME BODY SHAPE - OUTDATED)
http://ludumdare.com/compo/wp-content/compo2/298346/25004-shot0.jpg
This image isn't took from GangBeasts but from "Bait", a game made by Boneloaf for a Ludum Dare (a competition where you have to make a game on agiven theme in a short amount of time), you had to control this little guy and make him swim or walk around the lost islands he chrashed his boat on, but you have to be careful as there's a shark looking for you in the water! The game had no ending (but you were able to die if you got butten by the shark too many times) but it already had the separate hand control for grabbing that GangBeasts cunrrently has (though there were no punches and the grabs wre.'t targeted, as it was still a W.I.P. mechanic wich GangBeasts has EXTREMELY refined).
I used it to determine the pants' size on the current body shape (while still trying to make it proportion with the original concept art).

4) "Play-doh" costumes concept art
http://images.akamai.steamusercontent.com/ugc/631980045791985893/A15F177CE147824727BACCE80526B409043E5462/
This one is the most recent images regarding planned full character costumes, it's also the only one that shows costumes not avaible in the game applied on the current "play-doh" characters (as the previous ones used human characters).

NOTE: I took the Blue Luchador concept art and added it to my imagefor making it easier for people to compare the original image and the (really bad) 3D version of it I made. I do not proclaim to own it, it belongs to its original creator (that is Boneloaf)

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EDIT: I re-uploaded the image since I decided to improve the character's shoulders and arms a little bit (so that the characters have the actual standing pose they do in v0.2.5b)"