Pixel Face Quote
Feed it a string, and it will make a random pixel face person saying the text.
face_quote.rb hello.png 'Hello world! My name is Paul Thompson. Pleased to meet you!' 3
Also needs Pixel Font, which isn't a gem. Just git clone to the repo root and it should work.
git clone https://github.com/nossidge/pixel-face-quote.git gem install chunky_png
Then, within the "pixel-face-quote" directory:
git clone https://github.com/nossidge/pixel-font.git