The leaflet for the Medium and Large Zelfs serve two purposes - on one side it contains artwork and a biography for the character purchased, including a picture of their fabitat. The other side includes artwork of all of the medium characters (with stars noting if they are available in large) and acts as a checklist, with the purchased Zelf already ticked off.
The Lil' Zelfs leaflet acts mainly as a checklist, for both characters in medium/large form and the 36 Lil' Zelfs. One side includes all of the Lil' Zelfs available, whereas the other side includes artwork of all of the medium characters and a checklist for them, just as in the Medium and Large leaflets.
2014 collectors leaflets are no longer individualised, with the newer leaflets being of a larger, fold-out size. One side details the different characters and their biography details, whereas the reverse contains a map of Zardenia.
Zelfipedia is currently working on getting scans of the full collectors leaflets.