Invisi Billy was trademarked on April 16, 2012 and his first doll came out in Late June, 2014. As of January 01, 2015, his doll number totals 1 and makes up 0.29% of the entire Monster High doll collection. Other merchandise of his is not yet available.
- Invisi Billy was officially introduced to the fanbase as an April Fools' Day joke in 2012. Both the Monster High Facebook account and the Gory Gazette were updated with pictures and articles on a new student at Monster High. The pictures contained empty boxes, with the taunting quote "How do you know I am not in the box?", while the profile revealed that Invisi Billy was a prankster. Later on April Fool's Day, Mattel announced the joke, explaining that Invisi Billy was real but that he wouldn't come out any time soon.