Jackson 'Jack' o' Brians (Darragh Mortell) is a fictional character from CBBC TV sitcom, Dani's House. He is DJ who lives near Dani who was first introduced in "Jack in the House", replacing Toby. He used to go to school with Dani and Sam and was described as being a ”complete nightmare.” By the events of Jack in the House Jack has changed and he tries to make things up to them. After that the three of them are solid friends.
Series 2[]
Jack is first introduced in Dani's House: Series 2. He shows a similar personality to Toby who he replaced although, Jack is obsessed with food and seems to be slightly more intelligent than Toby.
In 'Jack in the House' it is revealed that Jack has an evil archenemies, called , 'The Cat from Hell'. . Jack, says he DJs at "top major gigs" but then he admits that he DJs at little kids' parties. In trying to set up his DJ rigs Jack manages to blow the electricity in Dani's house.
In Wedding Dress Jack convinces Dani to try on Sam's sister Miranda's wedding dress saying it will help her get into her acting role. This backfires when Dani rips the dress and gets glued to a kitchen chair. Things are resolved when Miranda's fiancee tells her that he loves her, black, ripped wedding dress.
In Secret Millionaire thanks to a mix up from the bank Dani and Sam believe that Jack is a secret millionaire. In reality he only has 10 pounds in the bank and is broke. Jack meets Cathy who claims to own a charity called, 'booties for pooches' who knits booties for stray dogs. In reality she is actually a secret millionaire who saw Jack and believed that he needed help. Despite being broke at the end of the episode Jack buys Sam and Dani the shoes they so desperately wanted.
In Scrooge Tube Jack, in Max's nightmare plays the ghost of Christmas present. He shows Max a flashback of Ben earlier on that evening making friends with a snowman after Max dissed the present he bought him.
In Marathon Man Jack get's on a health kick and decides to run the sport relief marathon in order to prove to Sam and Dani that he isn't a couch potato. Dani and Sam originally try to stop him after they put themselves down for 10 pounds a kilometre. After Jack injures his ankle they run the marathon with him.
Series 3[]
In Grandad and the Emo of Doom Jack is strongly against the idea of Dani duetting and potentially getting with Brandon Noir, a famous emo popstar. He teams up with Max and Dani's grandad in order to put a stop to it. at the end of the episode Dani see's see Brandon for what he is, a vain self-entered popstar.
In The Cook Off Dani, Sam and Jack find themselves in a three way competition. Their food is sabotaged by Max and Ben and the three of them originally Balme each other before realsing who the real culprits are. At the end of the episode none of them win the cook off but they have made up.
However both Max and Maisy fail as Jack eats an apple instead of the sickly treats they are trying to give Jack, but at the end of the episode he is seen eating a bowl of popcorn with Dani. Darragh Mortell also appears in the story of Tracy Beaker as Crash.
Jack is quite unhygienic since he ate out of date fig rolls and made them 'magically' reappear by throwing up.