Ronnie first appears at the parent's party while the kids are away in "Tech Rehab".
in "Breast Friends", Lonnie waits in anticipation of the arrival of his friend Ronnie. When a delivery man brings an urn containing his bud, Lonnie believes his friend has died. After spending one last day with the remains of his friend, Lonnie smokes the remains. Back at Lonnie's van, Ronnie arrives and reveals that the urn contained his stash and that Lonnie misread the note. However, Ronnie has brought the ashes of Lonnie's dead father.
Ronnie is voiced by David Koechner.