Jackson Jekyll is the newest Monster High member out of the five. He is the son of Dr. and Mrs. Jekyll. He has a plain style and usually wears sweater vests. In the Gloom Beach Dolls though, he wears a patched-up black and white shorts and yellow and white striped shirt with black details.
She is usually dressed in colors of black and pink, and also likes spicing up her wardrobe with laces and frills. This type of fashion sense is evident in her beach apparel in the Gloom Beach Dolls line.
The Gloom Beach Dolls line of toys includes only five characters from Monster High: Frankie Stein, Cleo de Nile, Clawdeen Wolf, Draculaura and a new character Jackson Jekyll.