Like Princess Bubblegum, Neddy’s entire body is made up of gum.
When he was an infant, Neddy was a worm-like creature.
In his current age, however, unlike Bonnibel who grew up into a Gum Person, Neddy has become a Gum Dragon. He has small bat-like wings that are capable of flight, despite being small for his body size; and he has a long tail. He also has multiple small flabs around his body, which is where the candy juice comes out of him when suckles on the candy tree root.
Both in his infant and current age that Neddy is born with an upside down head, which surprisingly, given that the candy tree roots are now above him, helps him continuously suckle on the candy tree root without stopping temporarily to rest.
Like Bonnibel, Neddy emerged from the Mother Gum or "the gum hive". When Princess Bubblegum was born, she gently fell into a puddle of water. Neddy was born seconds after his sister and he fell onto a sharp rock shortly after, causing him to scream in pain and run away. While Princess Bubblegum explored, Neddy terrifyingly screamed through a path filled with sticks and twigs. He eventually finds comfort in sucking the nutrients from a candy tree, which then causes him to excrete candy juice.
Princess Bubblegum has built a safe place for Neddy deep within the Candy Kingdom, where he sits alone and content in sucking on the candy tree roots and producing copious amounts of candy juice, which the Candy Kingdom uses for bathing and for its healing properties. He had presumably lived there in peace before the King of Ooo disturbed him, causing Neddy to run away in a panic. Princess Bubblegum successfully brought him back home.
Neddy is a shy and sensitive Gum Dragon. Neddy seems to have a very infantile mentality and is easily frightened, especially by the presence of other people or creatures or even funny looking plants, to a near-crippling degree. Nearly anything outside of his extremely narrow comfort zone sends him into a terrified panic. His only source of comfort is suckling candy tree roots and his beloved sister's lullaby.
Powers and abilities
- By suckling the vitamins from candy tree roots, Neddy can ooze candy juice from his body. This juice is the life-blood of the Candy Kingdom and is used to run a majority of its resources.
- Proportional to his giant size, Neddy possesses incredible physical strength. Through sheer physical force he was able to easily smash through the stone walls of his underground hideaway, and Jake doubted that he and Finn could stop him alone.
- Neddy has small, bat-like wings which he uses to fly.
- He is one of Princess Bubblegum's two relatives that she did not create, the other being the Mother Gum.
- When asked about the differences between the two siblings, Princess Bubblegum says, "People get built different. We don't need to figure it out, we just need to respect it."
- Neddy could be a reference to Nidhoggr from Norse Mythology. Nidhoggr is a dragon/serpent who gnaws on the roots of the World Tree Yggdrasil, much like Neddy sucks on the roots of the Candy Tree.