Holt Hyde/books

Holt Hyde debuted in the books in Monster High of the Monster High book series, which premiered on September 01, 2010.

Books
Holt is known as DJ Hyde. He has a crush on Frankie Stein, whom he refers to as "Firecracker", for the longest time, but they break up. DJ is the grandson of Dr. Jekyll and Mr. Hyde, making him a third generation monster. The chemicals used by Dr. Jekyll were apparently very toxic and clung to the DNA, passing the condition down to his progeny. The condition afflicted Jackson's father and drove him mad, despite his mother's attempts to help. The only ray of hope Mrs. Jekyll could see for her son was that the change had stabilized through the generations, becoming less violent and unpredictable than its previous forms. As a biochemist, she surmised that the chemical had mutated into a more stable state. Jackson's condition manifested around the age of 13 or 14. Due to the prejudice faced by monsters from humans, his mother protected him by keeping the truth about the family hidden. In the book, Jackson's physical change is more mental than physical (although in the second book Hyde gains a physical appearance of his own, having lighter hair and different colored eyes) and is governed by temperature rather than night and day. When Jackson gets too hot, Holt Hyde emerges, and Holt disappears when he gets too cold. Though DJ wasn't directly seen in the third book, but when his mother got fired, they moved to another town, where DJ was the main personality. He became a roadie for Leadfeather.

Ghoulfriends
Holt sometimes follows classes instead of Jackson.

Hopes and Screams
Holt is one of the many who manage to get their hands on Clawdeen's new fashion line: Hot Mess. A few days later, Holt has a great time at the Gory Gazette party.