So glad you enjoyed the game!
Impossible-Rat-Babies (Tumblr) drew Edward 2 years ago, from the description in-game and the Artbreeder MelS had done when we started brainstorming the story back in 2021-2022 (GoogleDocs). We don't have a specific face claim or more description for him, we're more interested in how people think the characters look like in their heads ;)