Looking at astronauts one of the main distinguishing features about their appearance is this suit that makes then look overly chunky and clumsy. For my character design I thought I could exaggerate these features and use the clumsiness to my advantage as my prop is a pogo stick (something that you need a small degree of agility to use) and the set which is a museum (a place where you must take care not to damage anything)
The first obvious astronaut I looked at was Buzz Lightyear, not however because he is a spaceman but because I like his overly broad chest and tiny limbs.
The rotund belly of Mr Incredible was another influence in sketching up astronaut ideas
Astronaut Preliminary Sketches