I will admit that there was much more colourful characters than these two at the bus stop, which I may draw at a later date, but I noticed the difference of where their weight was centred between these two guys. One felt very in the waist/hip while the other felt very in the chest/shoulder area. It got me thinking about shape weight on characters and how subtle the changes make different characters. The difference in clothes helped too but I will play with more overall shape changes to see how it creates more variety.
Hope you're having a great summer!