A 13-year-old student at Francis B. Wooley Middle School and a key Dream Chaser for the Brooklyn Bureau. He is the twin/older brother of Izzie. Brown hair and black eyes in the Waking World. In the Dream World, his right eye glows green, and he wears a signature green belt and cape. An artistic Dream Crafter who brings his drawings (like Z-Blob) to life. He wields weapons such as a pencil spear, Z-Blob Sword, and Lumi-Caster. Protective older brother to Izzie. Best friend to Cooper and close teammate to Zoey, Logan, and Astrid. Guided by Mr. Oz. A living dream creature originally created by Mateo as a superhero character in his personal sketchbook. He was accidentally brought into reality when Mateo unlocked his Dream Crafting abilities. A small, vibrant green slime-like blob with large, expressive black eyes. Dream World Forms: Highly malleable. He can stretch, morph, or combine with various objects. Mateo frequently Dream Crafts him into a massive, piloted mecha/robot suit equipped with jetpacks, laser blasters, or weapons. Serves as a loyal companion and powerhouse fighter for the Brooklyn Bureau. Despite communicates through squeaks, chirps, and gestures rather than words, he possesses high emotional intelligence and bravery.

Isabel "Izzie" Garcia, an energetic 11-year-old student and Mateo’s younger sister, serving as an agent of the Brooklyn Bureau. Brown hair and black eyes in the Waking World. In the Dream World, her hair transforms into vibrant pink and blue. A upbeat Dream Chaser who crafts stuffed animals and cute creatures into powerful allies (like Bunchu the Bunny). She fights using Boomerang Swords and a hammer. Sister to Mateo, whom she often teases. Very close friends with Zoey, Cooper, and Logan, and looks up to Mr. Oz.

An competitive 13-year-old student at Francis B. Wooley Middle School and a Dream Chaser with the Brooklyn Bureau. Dark hair and blue baseball cap in the Waking World. In the Dream World, he takes on the form of a small, blue, monster-like avatar with glowing eyes. Bold and competitive, he relies on agility, speed, and bravado to fight nightmare forces. Starts off as a friendly rival to Mateo before becoming a close friend. Dating Astrid. Good friends with Cooper, Izzie, and Zoey.

A tech-savvy 13-year-old student at Francis B. Wooley Middle School and an active agent of the Brooklyn Bureau. Blonde hair, fair skin, and casual athletic clothes in the Waking World. Wears a high-tech armor suit in the Dream World. Expert builder and mechanic who constructs and upgrades vehicles and gear for the team in the Dream World. Mateo’s best friend since childhood. Close friend to Izzie, Logan, and Zoey, and works closely with Mr. Oz on machinery.

A 14-year-old musician and student who initially operated as a lone vigilante ("Dream Bandit") before joining the Brooklyn Bureau. Black hair styled in braids in the Waking World. In the Dream World, her hair turns dark purple, and she sports a dark, hooded rogue outfit. Skilled archer and musician who uses the Dream Shredder 5000 (a bow/guitar hybrid) to fight nightmares. Independent by nature, but deeply loyal to Mateo, Izzie, Cooper, and Logan. Acts as a big-sister figure to Izzie.

Astrid SchönbauerI is a 13-year-old German Dream Chaser from the Berlin Bureau who frequently aids the Brooklyn Bureau. Dirty blonde hair with a distinctive white streak, wheel chair user. Highly skilled Dream Crafter trained under Royce. She rides flying creatures and wields a lance, Lumi-Caster, and Cyber Blaster. Girlfriend to Logan (after an initial rivalry during the R.E.M. trials). Strong ally to Mateo, Izzie, Cooper, Zoey, and Mr. Oz.

A sophisticated, talking chimpanzee who lives in the Dream World as Mr. Oz's sidekick and co-pilot. A brown furred chimpanzee wearing a futuristic space helmet and suit. Serves as the logical half of Mr. Oz's personality. He operates the Spacebus and uses banana grenades and Lumi-Casters in combat. Mr. Oz’s loyal companion and advisor. Acts as a strict but caring mentor figure to Mateo, Izzie, Cooper, Logan, and Zoey.

Mr. Rupert Oswald (Mr. Oz) is a 62-year-old science teacher at Francis B. Wooley Middle School who secretly heads the Brooklyn Bureau as a veteran Dream Chaser. Older man with grey hair and a beard in the Waking World. Wears a space-explorer coat and hourglass accessories in the Dream World. Mentors the kids in Dream Crafting, strategic planning, and navigating the vast realms of the Dream World. Waking world teacher and guide to Mateo, Izzie, Cooper, Logan, and Zoey. Partner to Albert and superior/mentor to Astrid.