On Tgfa.org you will find lots of images from trasgender comics and books collected by the Transgender Graphics and Fiction Archive. If you like comics and you are looking for change of gender related materials, this site might be of help for you. The archive includes comic strips, comic books, and magazines, in addition to modified images and pictures.
If you are looking for trasgender comic strips and pictures, you will find this site interesting. Pay a visit to Tgfa.org and search for trasgender comic strips and images, including trasgender heroines from the comics. Then, if you are interested in getting comic strips and images, enter this site.
To sum up, if you want to download free comic strips of trasgender comi characters, you have to enter Tgfa.org. On this site you will get access to a large catalog of images from different comics, comic books, and magazines, including lots of funny modified images. 
