Asked about his dream comebacks, the Karl Kennedy actor said: "One of my favourite characters was always Joe Mangel. Mark Little is a very funny man and great comedian and good actor, and I thought Joe was fantastic earthy character.
"I was also very fond of Janelle Timmins, played by Nell Feeney. Janelle was what we might call a bit of a bogan, a very down-to-earth country woman. The whole Timmins family were were marvellous."
Alan, who has played Karl for more than 15 years, hopes the soap will reunite some old cast members for its celebratory 6,000th episode this year.
He said: "There's been no mention of it made to us, but I do hope so. For the 20th anniversary episode we had a clever device where cast members performed in a video."
He went on: "You just never know what's going to happen. But they are dreaming hard and long and shooting for the stars."