Hans Luffner is Doreen Burn's fiancé, who she gets into Wentworth to avoid. Hans is from Germany and his visa has expired and he's being sent back there. He and Doreen are friends and at one point she agreed to marry him so that he could stay in Australia. Then Doreen changes her mind but can't bear to tell Hans so she arranges to get sent back into Wentworth for a couple of weeks. Thus avoiding the whole issue. He comes to visit her (441) and explains that he no longer needs her help as he is marrying someone else.
Hans was played by Wayne Cull