This 3D character man might not have any specific name but it is very useful and very popular. You will find many variations of this guy by different designers with lots of different objects and in many different styles & positions. You can find 1 or 2 images of this 3d character fit for your website or design easily.
NOTE :: The links of images I previously had in this post were supposed to be from a stock images website as notified by Glen Allsopp in comments. I didn’t knew that these were uploaded illegally so to be on safe side I have removed these images and I will post 3D character images which are really free as soon as possible.
To start with I am posting few images for sxc.hu website and these are for free but you will have to register on their site to download and I will keep updating this post time to time.