Goliad is a character from the self-titled episode "Goliad." She is Princess Bubblegum's "substitute" in case she dies. Apparently, she can live forever. She is able to control people's bodies so they can do what she wants them to do.
Goliad is a large pink colored sphinx with a body resembling a feline and having the head of an infant. She has a single dangling tooth and wide eyes. In the middle of her forehead is a mound, which when opened, reveals a third eye.
In "Goliad", Princess Bubblegum reveals to Finn and Jake that she has created Goliad to replace her as the ruler of Candy Kingdom if case something happens to her, given her near death and temporary possession at the hands of The Lich a while ago. Goliad was introduced to Finn and Jake by Bubblegum who held her in a laboratory room in a pool of liquid, the liquid containing all the mixtures of her creation. Goliad greeted the two and repeated their names, indicating she was in the learning stage. An exhausted Bubblegum left Finn and Jake up to the task of teaching Goliad the ways of a ruler, to do this they took her to the Candy Kingdom Pre-School. While there, Goliad became convinced that the best way to lead was to control people with her psychic powers, because everyone did what she wanted, really fast, and with no mistakes. Later, she reasoned that she shouldn't care about the well-being of others because she was the strongest.
A panicked Finn and Jake raced to tell Bubblegum about Goliad's behavior. Fearing her creation was already corrupted, Bubblegum's plan was to dissemble Goliad. However, Goliad read Bubblegum's mind and rebelled. As she rampaged outside the castle, Finn and Jake volunteered to stop her, but Goliad's abilities proved to be overwhelming. It took another sphinx, Goliad's brother Stormo, to put a stop to her rage. Both sit atop of the Candy Kingdom castle, locked in a psychic battle of the minds for all eternity.
In "Princess Cookie", while Princess Bubblegum discusses with Finn and Jake about how to deal with Princess Cookie, Goliad and Stormo can be seen behind Princess Bubblegum, still engaged in their endless battle.
In the series finale "Come Along With Me", one thousand years after the events of the show, it's shown that Goliad and Stormo are still fighting through their minds in the Candy Kingdom castle, which is now part of the Pup Kingdom ruled by Gibbon. Due to their immortality, Goliad and Stormo will likely continue with their battle forever.
Personality and traits
Goliad started off as being rather naive to her surroundings, but was eager to learn and attempt to duplicate what she had learned. She spoke in a polite manner and displayed a sense of curiosity. Her first lesson, however, was the result of her yelling at Candy Children to get them to do what she wanted. This came from her observations of Jake yelling at the children in order to show dominance and discipline. When Finn tried to explain that her actions were wrong, Goliad disagreed in a matter-of-fact manner, and proceeded to establish her dominance and show how much efficiency can be accomplished if she used her natural powers.
When trying to get Goliad to accept the differences and social rules, she made it a point to defy them and instead preferred her own ways. It was Princess Bubblegum who viewed Goliad as being the subject of corruption and saw it best to disassemble her. This only caused Goliad to become enraged and more determined to be the dominate ruler.
Despite being at an infant stage in life, Goliad has high sense of intelligence, described by Bubblegum as "Mondo mama brains". She has psychic abilities which are visibly seen being produced from the third eye in the middle of her forehead. She is able to read the thoughts of others and also reanimate dead beings, she demonstrated this by crushing a bee between her paws and reviving it in the same instant.