This one is based on the 1980's manga series by Asari Yoshitoh titled 'Space Family Carlvinson' - about the interplanetary crew of the Carlvinson stumbling on an orphaned baby girl (human) which they decided to adopt as one of their own. They named her Corona-chan, the father is that robot pictured above while mom is the purple thingy. This Space Family Carlvinson papercraft set includes mom (purple alien) and 4-legs (can't remember the name?). Designed by our friend toriaezu.
Space Family Carlvinson Papercraft [toriaezu]