Jim Rollins is the father of Detective Amanda Rollins.
History
Jim called Amanda one day and asked her to come to his wedding to another woman, which Amanda had mixed feelings about. (SVU: "Must Be Held Accountable")
When Kim Rollins was facing prison time, Jim came to help Kim out and reunite with both of his daughters. Despite Amanda being frosty and unforgiving towards Jim for abandoning her, she was still civil towards Jim but made it clear she did not forgive him. (SVU: "Eternal Relief From Pain")