Hi,
I made an app PussInPhoto that can compose some cats to the picture we select.
like the picture above, it could “protect” someone who don’t want to show his face 
There is not only the cats, PussInPhoto also support text mode.
Below is the link to PussInPhoto.
https://play.google.com/store/apps/details?id=ihliu.free.pussinphoto
Hope you like it.