If anybody could help me with this I'd appreciate it :)

you mean minions? you would have to actually remove the background in an image editing program and then upload the picture to a site like imgur or tinypic, and use the following code to use the new image as an overlay:

img {height:0px; width:64px; padding-bottom:64px; padding-top:0px; background:url(IMAGE URL) left top no-repeat}