Vivian Few

Similar to Eddie and Wendy's relationship but it's more tame and non sexual. They grow close in the production of the show. Considering how Vivian was the Happiness Host in Wellington Wells, she keeps her people updated on what goes on even as a Downer. However, Vivian's the only person in the studio Jackie treats with any respect.

Rosie Jean Toulon

Jackie does treat Rosie with respect in a certain degree because she believed Jackie was innocent despite what was going on with the killings from the HAHA bar. Those two were friends before Vivian came into her life and they were close. 

Baby

Despite how her friendship with Baby was short due to what Baby did to herself, they were able to bond over small conversations before the HAHA drug took effect. Baby also believed Jackie was innocent despite Jackie's attitude towards the others due to her kind nature. 

Kat

Jackie's relationship with Kat took a turn for the worst when she snapped at her. However, Jackie only snapped due to her Klown instincts kicking in making her angry. Jackie did say she was going to kill Kat but she never did since she said it out of anger. Kat and Jackie had a small friendship but it was torn apart due to popularity and Jackie's pride getting to her head. Kat was originally going to apologize to Jackie for her temper but was killed by smashing her face with a hand mirror. 

Aaron

Even though they had humble beginnings during the show's production, Aaron was manipulative and sly when it came to the HAHA recipe in the bar. When he realizes that the drug inside the bar was killing people, he had to put the blame on Jackie to cover it up. When he explained his plan to Jackie in prison, she strangles him which caused him to edit the video making Jackie strangle him with no apparent reason. It shows how Jackie was betrayed by Aaron due to his personal gain. 

Info Chan

Jackie originally hated Info Chan due to her thinking Jackie was the killer but liked her and considered her a friend when she shot Aaron killing him. Info Chan was able to call an ambulance for Vivian when she got injured by Aaron. A few months after the incidents, Jackie wanted to owe it to Info Chan for saving her and Vivian.