The original risograph-printed, self-published art book by Andy Ristaino, limited to 188 signed & numbered copies. Like it says, 121 different creatures, inventively designed, lovingly rendered.
Andy Ristaino is a character designer on Adventure Time. He began working on the series during its second season and is currently the lead character designer. He helped write the episode "Little Dude," based on an idea focusing on Finn's hat's origins.