Shortly after the character was announced, a show spokesperson stated "Jase is an enigmatic character in his mid thirties and arrives on the Square looking for his son. We don't know much about him, but what we do know is that he hasn't been in Jay's life for years and he was never a doting parent." They added that Jase's past is full of secrets and summed him up as "a dead wrong'un." A writer from the "EastEnders" website said "Jase is something of a mystery man, with a dark past." During an interview with a "What's on TV" writer, Lord explained that Jase comes to Walford to see his son and he admitted that both Jay and his father-in-law, Bert Atkinson (Dave Hill), are shocked by his appearance. Lord stated that it is obvious Jay is happy to see his father, but Bert is unsure. He explained "The truth is Bert doesn't really know Jase. They've not had much to do with each other. He just assumes Jase is up to no good. Well you can see why Bert thinks that – there's definitely something of the dark horse about Jase. He doesn't give much away."