Really great app, saves lots of time in the course of an average workweek. It’s even better when you can read the contents of a .pkg using Suspicious Package before unpacking it with unpkg (http://www.macupdate.com/app/mac/26833/suspicious-package). Thanks to the developer for making it free!
The word 'platypus' itself is not in any way copyrighted or owned by the Olympic Committee, but that particular image of an animated platypus is in-fact a mascot from the Sydney 2000 games. Do a bit of research and you'll see for yourself.