Potsworth: Carter's pet dog, and the main character of the series. In the Dream Zone he's a talking, sarcastic dog.
Carter: an African-American boy who is a skilled artist. In the Dream Zone he has a magic brush that can bring things to life.
Keiko: a Japanese-American skater girl. In the Dream Zone, she can hover using her skateboard.
Rosie: a short-tempered, annoying brat. Sometimes she helps in dangerous situations.
Nick: Rosie's young brother, who always carries a dinosaur doll. In the Dream Zone he can fly like a superhero, and his dinosaur is alive.
There are also the Dream Zone inhabitants, whose king is the Grand Dozer, who must not be fully awakened or the world will end. The Big Bad is the Nightmare Prince, who plans to disturb the Grand Dozer and to have nightmares take over the world of dreams. Quite often, the Midnight Patrol's foiling of the Nightmare Prince's plans would involved getting a key MacGuffin by going to the Cave of the Greystone Giant, who essentially keeps track of all the items used in dreams and stores them in the Cave when not in use. While on the side of good, the Greystone Giant is a grumpy character who likes his solitude and the Patrol often have to talk him around to helping them.Had a Comic Book Adaptation in the The Beezer and The Topper, and when that folded, The Dandy.Compare Captain Zed And The Zee Zone.
Batman Gambit: How the Midnight Patrol finally gets rid of their evil duplicates in "The Nightmirror" episode. The only way to get rid of them is to trick the duplicates into looking into the same mirror that gave them birth; the heroes accomplish this by relying on the duplicates' own nastiness. They trick the Carter and Rosie duplicates into looking into the mirror by asking them to get rope for "captured" good kids, and they trick the Nick and Keiko duplicates into looking into the mirror by tricking the arrogant Nick duplicate into proving his strength by lifting up a bigger boulder. The Potsworth duplicate is then dispatched by asking him to play fetch with a bone.
Department of Redundancy Department: When the Greystone Giant went on a vacation and left the Midnight Patrol in charge of the cave, he set three rules to be followed: 1) Don't let anyone in; 2) Don't lose the key; and 3) Don't let anyone in.
Gilligan Cut: In the episode "When Bubba Rules", the Nightmare Prince's Mother sent Count Bubba Bonebreaker to replace him. When asked about what he'd be, the Nightmare Prince was told he'd be a janitor. He then said he wouldn't be one even in a billion years. Cut to the next scene, where he's already doing janitor duties.
Hover Board: Keiko's skateboard becomes one in the Dream Zone.
Hypercompetent Sidekick: The Grand Dozer's minister Sebastian. More or less required given that the Grand Dozer needs to be asleep in order to keep the Dream Zone safe (in one episode when he has insomnia, the land starts to fall apart) so Sebastian has to do all the work.
Panty Shot: Rosie, in the intro and pretty much every episode.
Paper-Thin Disguise: In "Save the Cave" the Nightmare Prince uses one to trick the Midnight Patrol into letting him into a cave they're guarding and he locks them out. The Midnight Patrol try their own paper thin disguises to trick him into letting them back in, but none of them fool him.
Reasonable Authority Figure: Unexpectedly, the female patrol officer in "The Nightmirror" turns out to be this. The heroes were locked up because evil duplicates were causing trouble, but once the evil duplicates create another incident while the heroes are already in jail, the patrol officer springs the heroes out right away so they can take on the real villains.
The Grand Dozer and Sebastian are usually this trope in general.
Redshirt Army: The Snooze Patrol, the Dream Zone's conventional law enforcement, who are sometimes shown as somewhat resentful of the Midnight Patrol.
Running Gag: Whenever someone claims the Grand Dozer to be on a certain mood, be it good or bad, the Grand Dozer would be shown asleep and that claimant would state something like "Well, he would be if he was awake".
Tyrant Takes the Helm: When the Nightmare Prince's mother demoted him and hired another villain to replace him was so hard (read "impossible") to defeat in direct confrontation the heroes decided to sabotage the nightmare generator as part of a plan to trick the Nightmare Prince's mother into firing him and reinstating her son as the Big Bad.
What Happened to the Mouse?: When Count Bubba replaced the Nightmare Prince, he brought three henchmen. When the Nightmare Prince returned and fired Bubba's henchmen, only two henchmen were around and no explanation was given to justify the third one's absence.