Marcy Lynn and Bonni Belle. Marcy is a temperamental, self-assured, yet loving girlfriend to soft, intelligent and sassy Bonni. Bonni wants to research vampire secrets to either return her beloved back to normal, or help her master her vampire powers. It's up to you what happens to these two lovebirds! Based off of the cartoon Adventure Time. #adventuretime #bubbline #marceline #bubblegum #lgbt