AirComix is the best viewer for scanned comic files.
You can see your comics from your android device's memory card.
You can see through FTP, Dropbox or AirComixServer.
* Supports streaming through Google Drive & Dropbox & Box & WebDAV & FTP
* Supports reading zip, rar compressed files. (also support within AirComixServer)
* Supports various image formats such as jpg, bmp, gif, png.
* Supports auto resize and single page view.
* Supports auto bookmarking.
* Supports reading both left-to-right and right-to-left comic books.
* Supports preloading next pages when you read the book.