I need a professional drawing/sketch for a website

Information for the business: We sell sportswear (based on Norse Mythology)
Industry: Sports and Fitness
Design details: I would like someone to design me a fusion of a rugby player with a viking (either half and half or rugby player on the left viking on the right and in the middle is a fusion of the two).

This will be an image that goes on the background of the website (see www.sanabulsports.com to give you an example of the location). I am looking for it to be a black drawing but with the ability to add colour should I wish to do so. For this I will need the core files (not entirely sure what the technical term is).

My business is called Valhalla (hence Norse) and we are selling Rugby clothing and equipment with the twist of Norse Myth.

I absolutely encourage creativity so if you have ideas of how you think you could do differently do let me know. I am happy to hear it.
Ideas for the visual style: If you search "DBZ sketches" you will get an idea of what I am after. I do not however want the pencil look.
Where the design will be used: Web
Extra notes: I apologies for the lack of detail. I can think creatively but I do not have the ability to explain it very well or even draw it myself (obviously). Happy to talk to the right person and provide more detail and guidance.