The Numberjacks were animated characters (the numbers 0 to 9) who live in an ordinary sofa and solve problems outside; each episode has the same structure. At the beginning of the episode, some of the Numberjacks would be engaged in an activity, that would have relevance to the problem that was later discovered - then, an "agent" (who was a live-action child) would call in and describe the problem that is occurring. One (or two) of the Numberjacks would go out into the real world to solve the problem while the remaining Numberjacks stayed in the sofa and watched their progress on a screen. As soon as the problem was understood, Five would imagine what else could go wrong if it wasn't solved (often wondering what would happen to the Dancing Cow, who never actually made any physical appearance in the real world).
Once outside, the Numberjacks were shown in a live-action setting (although themselves still animated); they diagnosed their problems by examination and with additional ideas from the agents, who called into the base. The problem could be caused either by one of the villains, or by one of the younger Numberjacks (Zero, One or Two) escaping from the sofa and inadvertently making things go wrong. The Numberjacks solved their problems by using "Brain Gain," a magical force of power activated by a machine in the sofa and transferred to the Numberjack.
Once the problem was solved, the Numberjacks would return to their base, replay the preceding events on a screen and then challenge the viewer to think about a related problem and "call the Numberjacks"; the problems encountered were all based upon simple mathematical concepts, and the programme was intended to stimulate young children's interest in mathematics. On satellite, digital, and cable TV, a link to Numberjacks often appeared in the corner of the screen and sometimes on (for example) gardening programmes as a way of helping people with basic numeracy.
While this is a show for preschoolers, older people have been known to watch the show on occasion because of its ridiculously adorable protagonists and their evolving personalities.
Needs Wiki Magic Love, please.
"Things may be all be going wrong, but you can bet it's not for long, the Troperjacks are on their way!":
- Big Brother Instinct / Big Sister Instinct: Four, Five and Six are like this with Three, sometimes a little overprotective as she just wants to help on a mission, but was often deemed "too small a number" in the earlier episodes.
- Three is this to Zero, One and Two.
- Seven, Eight and Nine, as the most mature Numberjacks, are this to all the other numbers.
- Breaking the Fourth Wall: Done at the end of every episode when the Numberjacks ask the viewers to try some math-based problems based on the one they figured out in the episode.
- Three commonly says "Me, me, me!" when she wants to do something, mostly go out on a mission.
- Six is often heard saying "Did the trick" when the Numberjacks accomplish something.
- Whenever Five imagines something, she usually says "if [meanie/little Numberjack keeps causing the problem], anything could happen."
- In some episodes, Four says "I'm not sure" when he's nervous about going on a mission, or sometimes doing advanced jumps in the gym.
- Cast of Snowflakes: Obviously, all the Numberjacks have unique bodies and colours, but this also applies to the Agents; none of them look remotely similar.
- Cats Are Mean: Averted with Jasper, who is always a good sport about letting the Numberjacks launch.
- Color-Coded Characters:
- Cool Big Bro / Cool Big Sis: Seven, Eight, and Nine are looked up to by the younger Numberjacks and sometimes babysit them. Occasionally, Six and Five will babysit them too.
- Damsel in Distress / Distressed Dude: Everyone (except Zero) gets hit with this in "Zero The Hero"
- The Puzzler has trapped Three, Five, Seven, Eight and Nine in puzzle bubbles on separate occasions, and Three's mouth was forced shut as well. Five was also stuck in quicksand one time.
- Five's eyes were forced shut in "Time Trouble" by Spooky Spoon and she almost had a nasty fall.
- Three and Four were almost sucked up by the Numbertaker on separate occasions.
- Five and Six were messed around with the Problem Blob on separate occasions.
- Six was stuck in a box during "Boxing Day".
- Ding-Dong-Ditch Distraction: When someone is sitting on the sofa at launching time, one of the Numberjacks will ring the doorbell to make the person go away. That is, unless it's Jasper, who they're fine with being seen by.
- Edutainment Show: This show teaches small children basic math, including numbers (duh), shapes, and patterns.
- Five-Man Band: In "Seaside Adventure":
- Four-Temperament Ensemble: Five is Phlegmatic and Four is Melancholic. As for Three and Six... well, it really depends on the episode, but typically Three is Sanguine and Six is Choleric.
- Gender-Equal Ensemble: Zigzagged. The Numberjacks themselves have the odd numbers as girls and the even numbers as boys, but the "meanies" have two girls and three boys. Agents can vary.
- Genki Girl: Three is the most enthusiastic of the Numberjacks. Six is a close second, being a Genki Boy. Two is pretty active, but also quite moody, and he's a boy. Five and Seven are enthusiastic too, but not as much as Three.
- Innocent Blue Eyes: Zero, Three, Six, and Nine all have blue eyes, and they're all heroes.
- I've Heard of That What Is It?: In "Slide and Turn", Four has a line like this regarding a moving mat that Six uses to move a car.Four: "Wow, that looks good. It's great! Fantastic! ...Um, what is it?"
- Job Song: The theme song is about the Numberjacks' job solving problems.
- Medium Blending: The Numberjacks themselves, as well as the meanies (barring the Numbertaker) andthe interior of the sofa are animated in CGI. The Numbertaker, the Agents, and all other locations are filmed in live-action.
- Mid-Season Upgrade: In several episodes, Three wants to go out on a mission, but seems to never get her chance. She does get it eventually, with Five on three missions and Six on one. She was going to go out with Four as well but the launcher broke, making the episode in question her first ever solo mission. She eventually goes out by herself a few times.
- Mood-Swinger: Due to his young age, Two often flips his moods and changes his mind.
- Mr. Fixit: Four does the repair work.
- Ms. Imagination: Five is always the one who imagines the worst-case scenario.
- No Name Given: The family who lives in the house with the Numberjacks' sofa, consisting of a man, a woman, and their (presumed) daughter have no names initially. However, there is one episode where the daughter's name is revealed. It's Holly.
- Pink Girl, Blue Boy: Three is the pink girl and Four is the blue boy. Downplayed with Seven and Eight, who are red and light blue respectively.
- Rhymes on a Dime: The Puzzler speaks in rhyme.
- Roger Rabbit Effect: The animated Numberjacks often appeared in live-action settings.
- Screw This, I'm Outta Here!: The Numbertaker usually takes off running when defeated.
- Shout-Out: One episode is titled "May The Fours Be With You".
- Sick Episode: "The Dreaded Lurgi" has Four and Six get a disease called "lurgi" which makes them lethargic, unwell, and unable to do their jobs. Later, Three catches the lurgi, but Four and Six recover. They believe that Zero has also caught the lurgi, but he's actually just being himself.
- Sleepyhead: Zero falls asleep a lot, which is probably because he is a baby.
- Small Name, Big Ego: The Spooky Spoon thinks she's superior to everyone else, but is just a plastic spoon.
- Smug Snake: The Spooky Spoon is very arrogant and is one of the villains.
- Sticky Fingers: The Numbertaker likes to steal numbers and objects.
- Talking Typography: The Numberjacks are all talking numbers with faces.
- Tertiary Sexual Characteristics: Downplayed. The female Numberjacks have long eyelashes, but then, all the Numberjacks have eyelashes.
- Played Straight with the Spooky Spoon, who is all pink, and has a gold necklace and teal eyeshadow. note
- Unnamed Parent: The girl's name is revealed to be Holly, but her parents are still unnamed.
- Unusually Uninteresting Sight: In the episode "Almost Human", the human victim's girlfriend doesn't seem bothered that her boyfriend has been replaced with an anthropomorphic number 4, while the only response other humans give the "Numberjack Man" is a confused look.
- Villain Song: Each of the Meanies has one that plays when their presence is announced.
- Vocal Evolution: As the series progressed, Four's voice kept getting deeper and deeper, and by the series finale, his voice was almost as deep as Eight's.
- The Voiceless: The Numbertaker doesn't speak.
- You Are Number 6: All the numbers are named after the number they represent (the 3 is named Three, etc).