Rick Manning was a Prison officer and ex-policeman.

Rick comes in as an officer after David Bridges' death. He is on a bus when he meets Pixie Mason who has been on work release (421). They get off at the same stop and Rick is shocked to find she is a prisoner.  

He is introduced to the women and Pixie discovers the man she has been raving about to the others is an officer. But after her experience Cass Parker freaks out and takes time to get used to him.

He's a good sort with the women being the main focus and he is willing to help them like Meg Morris.  

It turns out he is friends with Eddie Stevens and lets Sonia know he won't let her ruin anyone elses life.

He leaves Wentworth in (458) to work as a juvenile crime counsellor.