In Doom Patrol Season 2 Episode 2, Larry went to Gary’s funeral, while the others visited Dr. Tyme, and in Doom Patrol Season 2 Episode 3, Red Jack, who Niles encountered as a boy, took Larry.
In the previous episode of DC Universe’s Doom Patrol, Larry’s son Gary had died, and the rest of the gang were back to size.
In the end, Niles stabbed Red Jack, and Rita and Larry freed all the butterflies, Red Jack’s victims.
When he was a boy, Niles had encountered Red Jack, who was using Larry to lure Niles back.