The opening episode follows the O'Brien family as they settle into their new community of Ballyfermot.
Roy faces a dilemma when he becomes a little too attached to his new frog friends.
Roy faces a dilemma over whether to pretend to be ill.
Roy's enthusiasm gets the better of him when he throws himself into the annual school charity drive.
It is hard to stay out of trouble when you are a cartoon and this week proves no exception for Roy, as he instigates more animated antics after a run-in with the headmaster over a confiscated computer game.
It's hard to stay out of trouble when you are a cartoon and this week is no exception for Roy, as he tries to win the local heat of a TV talent contest in order to keep his friend in school.
Roy faces life on the streets this week but, with few provisions and hardly any money, the cartoon boy living in the real world finds it hard to fend for himself - even with the support of his friends.
Sibling rivalry comes to the fore in this week's episode of Roy.
After a trip to the cinema to see a horror movie Roy discovers that being a cartoon boy can have its drawbacks when you are frightened.
Roy's superstitious grandmother warns him that if he pulls faces and the wind changes he might be stuck like that forever. Roy takes little notice until a sudden gust of wind forces the door open.
Even cartoon characters have to sit exams, as the comic adventures of a cartoon boy living in the real world continue.
Waking up with a halo above his head, Roy realises that he has even less control over his body than he had imagined. Now how to be rid of this embarrassing illumination?
Ballyfermot School is preparing for a visit from the school inspector.
Roy dreams of playing for the school football team, but fails to make the squad because he is unfit. He embarks on a crazy diet and exercise routine which has some even crazier side-effects. Will Roy succeed and join the team?
Roy desperately wants a dog but his parents refuse. An accident causes Roy to believe that he's a dog and he embarks on a doggy adventure. Will Roy's parents find him and will Roy ever become a boy again?
An act of kindness is exaggerated to heroic status and Roy's head gets bigger as he starts to believe the hype. As team captain, does he win the quiz and take the glory, even if it means alienating his friends?
Roy desperately wants a spot as all his mates have had one. His wish comes true but his cartoon pimple makes Roy's life a living nightmare. Conventional remedies don't work, so how can Roy get rid of his unconventional blemish?
Roy is fed up of cleaning his great aunt's house every Saturday, until he discovers that the O'Briens are to set to inherit her fortune. When his aunt unexpectedly dies, Roy feels guilty about being greedy, but perhaps he is worrying unnecessarily.
Roy accidentally gets shrunk to just five inches tall. Home alone, he destroys the anniversary cake that Becky baked for their grandparents. How will Roy make it up to his sister, and will he return to normal size?
It's Valentine's Day and Roy starts to have very strange feelings whenever he's near Kathy. He goes green and queasy, has butterflies and hot and cold flushes, could he really be in love with his arch nemesis?
When Roy causes the theft of Bill's taxi, he decides to earn money to buy a new car. Working as sidekick to a kids' entertainer, Roy sacrifices his weekends without being paid. Will Roy realise that he is being used?
Roy makes two outstanding discoveries in one day: that he can turn himself invisible and that his mate Jack is being bullied. Roy is determined to use his invisibility powers to avenge Jack, with help from their friends.
Roy and friends are building a rabbit hutch, but Roy's eagerness destroys it and the team fires him. Bill employs Roy on a decorating job which also ends badly. Can Roy repair the damage and make up with his mates?
Roy finds himself facing a big moral dilemma, when his consciences, Bad Roy and Good Roy, appear to help him with a decision. Their suggestions lead to Roy falling out with Tommy. Is it too late to make up with his best mate?
Rather than confess to Hammond that he scared off a substitute teacher, Roy pretends to be his uncle, teacher Troy O'Brien. He maintains the facade but Miss Sheringham is suspicious. Can she prove Roy and Troy are the same person?
Clip show. A school board member pays a visit to assess Roy. Everyone fears that Roy will be kicked out of Ballyfermot because of his chequered history at the school. Can the pupils and teachers save their favourite cartoon friend?
After a rocky first day at his new school, Roy decides to use a film project to show the other kids just how normal he is.
Roy wants to teach big bully Deco a lesson. He borrows Deco's formula for his school science project. Roy's unique version of Deco's formula turns him into a 50ft giant Roy! His friends have to work together to find an antidote before Roy hits the stratosphere.
Roy tries to change his look and soon finds himself with cartoon hair that won't stop growing. It has a mind of its own and it won't allow anyone cut it. If Mr Lucey can't help him find a solution, Roy may be hairy forever and it's getting longer by the minute. Who will be victorious - science or fabulous hair?
Roy believes he is living inside a game called Dragon's Breath. Everyone join forces to re-enact the game to help Roy return back to normal. Will Roy be stuck in the game forever, or will his family and friends help him finish the quest?
Bill discovers that Roy is a snooker prodigy and forces him to compete in a grudge match against Deco. Will Roy triumph at a sport he quickly grows to hate, or will he quit and dash Bill's dream that Roy will one day achieve snooker superstardom?
Roy creates havoc when he uses a class project to sell advertising space in his cartoon thought bubbles. Roy gets all the ads mixed up in his head, resulting in a toe-nail burger that chases his class and teachers through the school. How can Roy convince his class to chip in and help him get out of this pickle?
Roy hears his parents arguing and worries that they may be separating. What he doesn't realise is that they are acting in a local play, directed by Mr Hammond. Roy has to intervene when he thinks Mr Hammond is falling in love with his mother.
Roy must learn to acquire true forgiveness from his friends when he begins mocking them whilst playing the Jester during the school's Shakespeare Day
Mr Hammond reaches breaking point when Roy sticks a mohawk wig on his head, so he quits the Sandyford Progressive Learning forever. However, his replacement is too PC for Roy and the gang and they end up doing the unthinkable and plotting to get their old vice principal back.
Roy becomes so immersed in Japanese culture for a school project that he ends up turning totally manga. Roy's knowledge of Japan may end up saving the day for Mr Hammond.
Deco challenges Roy to a dance-off competition in an arcade in the seaside town of Bray.
When Roy's class decides to do a modern theatrical version of Sleeping Beauty, Roy manages to secure the role of the Prince.
When Roy accidentally falls into a film projector, Roy and Mr Hammond swap bodies. Both get a crash-course in what it's like to be in the other's shoes.
Between homework and chores, there just isn't enough Roy to go around, until Roy brings his photocopied double to life.
Roy gets a cold from Deco's prank but gets revenge when he sneezes on Deco and infects him with bubble-itis.
When Roy thinks Miss Jervis is leaving school because she is heartbroken, he tries to set her up with Mr Lucey.
Roy wakes up to find himself trapped in the body of a baby. Will he ever grow up again?
The gang are amazed when Niall draws a picture of Mr Hammond on Roy, and the drawing comes to life.
With Bill and Maura at a wedding, Becky is left in charge of Roy. Chaos ensues when she decides to throw a party.
A face-painting incident turns Roy into a gorilla. He chases Deco through Sandyford, causing chaos.
Roy has a tough time coping with his embarrassing father after he takes the job of janitor at Roy's school.
Roy wins a dinner date with a famous actor, and everyone in school wants to be his guest.
Roy and Becky lure Deco into the O'Briens' haunted house to get even with him for tricking Roy.
Roy and his classmates have a stressful week when they each have to look after an egg for a school project.
Roy is delighted when his imaginary friend Buddy comes back into his life after an absence of seven years.
A freak occurrence gives Roy the possibility of becoming a CGI cartoon - 'a perfect boy'.