We recently completed work on a character design, along with an assortment of different poses and scenarios, of this fellow for AWE, the company behind our national defence system.
He's for internal use across the company to promote good practice. This necessitated, in the first instance, several rough designs, and then the final chosen character being drawn up in Adobe Illustrator. The benefit of creating him this way is that Illustrator is a vector-based, not pixel-based, software package, meaning that whatever's created isn't limited by the size it's initially created at. So should AWE require any of the character drawings at different sizes the artwork can be rescaled without loss of quality and remain as crisp and clean as when it was first created.