CJ's Terrific Underground is a TV show for biggies. It is on Biggies and Middles hangout and Pengy biggies each day at 8:00am, 12:00pm and 7:00pm,
It leads adventures of a 11 year old boy called CJ. His 8 year old sister, Millie and his 7 year old brother, Mr Rails follow him as he adventures his way.
Episode 1: CJ's Dance Moves
At CJ's school they are holding a dance party but CJ has no dance moves. Will CJ learn dance moves?
Episode 2: Mr Knighty
It is medieval day in London, CJ finds a knight suit and puts it on but its making everyone afraid.
Episode 3: Millie dont give up!
Millie is tired of doing alot of work in school but she has to persevere to not miss the big party!
Episode 4: CJ meets Ernie
Ernie is a bully who meets with CJ and decides to bully him. Will Ernie stop bullying CJ?
Episode 5: Football Fun!
CJ and his friend want to see the football match but Mum says he has to clean his room to go.Will CJ go?
Episode 6: Caught Red Handed
Isha the explorer gives Mr. Rails a red plant but red goes on his friends. Will this ever been found out?
Episode 7: The Rails Family Big Trip.
The Whole Rails family are going to Brazil. The townspeople don't want him to go. Will they come back?
Episode 8: Find It! Keep It!
CJ finds a golden ticket for a holiday but loses it! Will CJ ever find it!?
Episode 9: The clowns assistant
The family go to the circus and Mr. Rails is chosen to be a assistant but the family lose him!
Episode 10: The Book Cover
CJ got a magazine and it says be on the front cover but Ernie wants to be on it! Who will be on the cover?
Episode 11: CJ's Dream Day
CJ wins a dream day but Millie is jealous so she has some plans.
Episode 12: Mr Fiesta
Mr Fiesta comes to London to entertain the younger kids. He wants to go to the school!
Episode 13: Summers Holiday
CJ, Millie and Mr. Rails love the summer holidays but its raining.
Episode 14: Late for school
The 3 children have trouble getting to school on time.
Episode 15: Golden Flashes
The DVD shop is at risk of closing down. CJ and Mr. Rails find a TERRIFIC discovery
Episode 16: The Playground Wreck
CJ's cheeky cousins, Mara and Kara are wrecking the playground
Episode 17: Kidnapped! HALLOWEEN SPECIAL
Millie gets kidnapped! Will CJ and Mr. Rails get her back to the underground?
Episode 18: Money Mystery
CJ's money box goes missing and can't find it. It turns out someone stole it!
Episode 19: Food Tempers
Mr. Rails is a fussy eater. So is Millie and they won't eat anything but candy!
Episode 20: A Rest Is As Good As A Change
Ernie is looking after the underground but he does it all wrong.
Episode 21: Elementary, CJ, Elementary!
CJ hosts a jumble sale for all his baby toys. When the toys go missing, Millie looks for them.
Episode 22: The Magic Wand
Millie finds a real magic wands but it breaks. Mr. Rails fixes it for her
Episode 23: How Great The Maths
CJ has alot of maths homework to complete and gets it all correct. Mr. Rails is jealous
Episode 24: The Prime Minsters visit.
Millie is very excited because David Cameron is coming to see the underground!
Episode 25: Gadget Grossome
CJ's gadgets dont work out fine. Millie, Mum and Mr. Rails help.
Episode 26: Winter is so fun! LAST EPISODE SPECIAL
Millie, Mr. Rails and CJ enjoy the snow and play in it!
Episode 27: Cyber Bullying
Millie watches some videos and shares her information. CJ tells her not to send it.
Episode 28: CJ finds a treehouse
CJ is at the park and finds a treehouse. Ernie tries to break it and CJ tries to stop him. Will it work?
Episode 29: Glasses
Mr. Rails cant see properly so Mum books him a eye test. He doesn't want them but he has to wear them
Episode 30: The Diagnosis
CJ is diagnosed with pneumonia after a terrible accident at the funfair.
Episode 31: All That Matters
Millie keeps saying all that matters is playtimes but CJ says its all that matters is work.
Episode 32: Meeting Paris and Mason
CJ, Millie and Mr. Rails gets a ticket to see Paris and Mason from Pengy Tweens studios! Lucky them!
Episode 33: The Pet Frog
Mr. Rails finds a frog and calls it Fredrick. Mum tells him to come in and Mr. Rails sneaks in the frog.
Episode 34: The Horrible Gift
CJ gets a gift from his grandma and he can't wait to find out. It was a dress! Millie laughs and he wants to get rid of it.
Episode 35: Hoppy Bunnies Network
Millie finds out about HBN which is for babies and CJ warns her to not download it. Mr. Rails and CJ has to put up with this.
Episode 36: Shopping Mayhem
Ernie starts a football game at shopping kicking a cabbage. CJ joins too then the manager sees it and they are in SERIOUS trouble.
Episode 37: Meeting Ernie's Cousin
Ernie brings his cousin, Zeis to CJ's house. Zeis wrecks the garden as he has ADHD.
Episode 38: Meeting Kyle
A boy who wanted to win Text Me That I'm Fabulous was lucky, Sally chose him! CJ was jealous.
Episode 39: Graduate Primary!
CJ and his friends graduate from primary but however Ernie joins in.
Episode 40: Gospel Choir Troubles
CJ, Ernie and his class are practising gospel singing for gospel singing live at London Hall. All of the class except CJ ( who wants to perform life at London Hall) do it incorrectly.
Episode 41: Zeis Wreckster
It is bring your little cousin to school day so CJ brings her little cousin, Debby. Ernie brings Zeis and he tries to wreck the tables and everything. CJ and Debby kept getting blamed for it.
CJ's Terrific Underground Miniclips Edit
CJ has dark brown hair and light skin. He wears a long sleeved black and white striped shirt with a short sleeved red zip hoodie. He also wears dark blue tracksuit trousers with black and red trainers.
Millie has blonde hair and light skin. She wears a pink striped t-shirt and a black hoodie over it. She also wears a rainbow coloured skirt and white tights and white and yellow shoes
Mr. Rails Attire.
Mr. Rails has white hair and light skin. He wears a yellow polo shirt and a blue coat over it. He also wears dark blue overalls and black boots.
Ernie wears a blue cap and light skin. He wears a turquoise t-shirt and a green scarf. He also wears light-blue jeans with green sneakers. When he is not wearing his cap, he has black hair.
Mum has black hair, light skin and brown glasses. She wears a leopard skin scarf with a pink long-sleeved shirt. She also wears black trousers and black shoes.
Mara and Kara's Attire
Mara has blonde hair while Kara has brown hair with light skin. They have pink and blue shirts, Mara wears pink while Kara wears blue with rainbow skirts. They have the same light-up sneakers
CJ's friend's Attire
CJ's friend has a blue and yellow bobble hat with brown hair under it with light skin. He has an hazel t-shirt with blue trousers. He also wears black pumps.
The Shop Manager's Attire
The Shop Manager has brown hair with light skin. He wears a white coat saying the shop's logo on it and also wears white pants. He also wears black shoes.
David Cameron's Attire
David Cameron has brown hair with light skin. He wears a black coat under a white shirt with a blue tie. He also wears black trousers with black shoes.
Zeis has blonde hair with light skin. He wears a football t-shirt with blue shorts. He also wears green trainers.
Kyle has dark brown hair with a center part with light skin. He wears a blue shirt and blue jeans. He also wears brown shoes.
. It is also on Pengy Teens and Pengy Tweens
. There is a movie of CJ's Terrific Underground coming in January 30th 2017
. The video game, CJ's Terrific Underground: Underground Problems is coming out 30th February 2016
. The show started on December 15th 2015 firstly on Pengy Teens then Pengy Tweens
. Kyle7202 is a big fan of this!