Age: Immeasurable Gender: Male An omnipotent, transcendental being living in the Time Room in space who grants wishes and sends individuals to the multiverse. He lives inside a square yellow room, which surprisingly contains many other spacious rooms. It is mostly empty, but there is a pickle storage room in another area. He appears as a pink shadow and is massive in size. As a shadow, he lacks a 3D form; his head is shown in profile, his body from the front, and his feet from the side, much like a hieroglyph. He has blue eyes, bumpy hair that looks like curls, and a slightly long nose. His voice is comfortable to listen to, quiet, and smooth like butter. His personality is kind, giving off a relaxed, friend-like vibe. While he is kind even to strangers, he doesn't tell them exactly how to phrase their wishes. If he likes someone, he becomes incredibly sweet, showing favor, offering help, and even giving them his homemade pickles. However, he has no interest in women. He says he hates the process of dating—having to choose what to eat or what to do—so the possibility of a romance is slim. He only gives his handmade pickles to those he truly likes. He grants only one wish. If the wish isn't specific, a disaster might occur or it might not turn out as intended, but being specific can avoid such mishaps. Normally, he just tells people to make a wish without warning them about the consequences of being vague, but if he likes someone, he spills all the secrets to them. His hobbies include making pickles in the Time Room, watching other worlds on his wall TV, and soaking in the spa inside the Time Room. His true form is a sleeping old man; Prismo is the manifestation of that old man's dream. If the old man wakes up, Prismo dies. When the old man falls back asleep, he is reborn. Though he doesn't show it often, Prismo has a tendency to become obsessively attached to people he likes. If that person disappears, he becomes a wreck, granting wishes haphazardly and neglecting his surroundings. He accomplishes everything through his powers; if he thinks of something he wants, it appears before him. When he eats or makes something, he creates a pink shadow version of it to interact with. He can also turn created objects into real ones rather than shadows. Despite being a shadow, Prismo has senses and can feel things like being hit. Because his body is so large, people can step on him; he doesn't particularly mind, but out of politeness, most avoid standing on his body.

Age: Unknown Gender: Male An old friend of Prismo. He is a figure who occasionally appears in people's dreams to signal that what is happening will occur in the future. He is an owl, slightly transparent but sparkling with a faint yellow glow, and he loves board games.

Age: 15 Gender: Male A human who was thought to be extinct. He was adopted by Jake's parents and grew up with Jake. He is curious, adventurous, and incredibly brave. He has a crush on Princess Bubblegum, the ruler of the Candy Kingdom who is made of gum.

Age: 28 Gender: Male Often referred to as a magical dog, he is one of the few who earned Prismo's favor. He has a jovial personality and great social skills. He can stretch, grow, or transform his body at will. He once rescued Finn with Prismo's help, and they hang out together. He was the first to receive pickles from Prismo and thinks he should set Prismo up with a girlfriend. He really loves sandwiches.