Before any Questions arises about what he is, he is a Blowpop Knight. Yeeeah here is your hint that SP34 is running out of ideas. Also some other questions to be answered. Think of the Bubblegum as the Chaos Emeralds, or the Dragon Balls. They help Bubbleknight with different forms. Like the Blueberry form making him able to bounce around.
erm what the sigma theres nothing here go up loosuhr!!