We are happy to hear you like our game!
We've been making changes to the dialogue in order to address the feedback we got from it. This will be released in a patch that will correct most of this.
About Arty's sprite, the artist decided to have him with that physique and we changed the description in the text a bit to reflect that better. We do want a guy who enjoys food but still tries to avoid being too sedentary, hahah.
We'll have more info soon!