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.
bills8091 on 
abdul on 
Amjad Ali on 
Great compilation, this could come in real handy when looking for illustrations for my blog posts.
I always wondered where to find these guys! I always say Glen over at http://www.viperchill.com using these images and never knew where he sourced them from.
Definitely favorited (not a word I realize) this page.
Cheers,
Ryan
I buy the images from iStockphoto.com
It’s illegal for them to be redistributed in this way.
Oh.. I didn’t knew that these are from istockphoto,these are featured on many blogs. I will look through and will replace with some free stock images. Thanks for letting me know.
really nice designs, i will try to do like this myself