He returns in the series finale, along with Fiona and Carl where they arrive for the birth of their new brother Ben. He tries to plead with Fiona to stop her choice, since they turned out fine with or without their parents. He watches Fiona hand Frank money to leave however, the latter refused to take it as Lip sees that he couldn't live without his family and is pleased to see this side. In the end, he makes amends with his family and partakes in their activities.