Joker is quite repulsive towards Harley Quinn, going the extra mile in the past to gaslight and abuse her. She found true love with Poison Ivy, leaving the Clown Prince of Crime to chart a new, repentant course. She found true love with Poison Ivy, leaving the Clown Prince of Crime to chart a new, repentant course.
The notion that Joker is the show’s worst character is being shaken up by Harley and Ivy’s eco-terrorist plot in Season 3. That is because they quickly discovered that Swamp Thing was even more terrifying than the clown. In addition, this discovery almost killed them in a way scarier than anything the Joker could have imagined.
Harley and Ivy were searching for Frank the Plant, their bioweapon. Despite not receiving any clues from the sex party the Court of Owls held, Ivy had a backup plan in place. As a result of her desire to use the Green to find Frank, they went in search of Swamp Thing. The situation was thrown off course, however, when Nora Fries joined the team. As a result of drinking with the gang and Matt Ryan’s Constantine, Nora found her way to Swamp Thing’s lair, which resulted in them hooking up. When Ivy and Harley found them, they hoped Nora would use her connections to help Swamp Thing locate Frank. Swamp Thing, however, was not interested in having a boyfriend.
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He was still reeling from his divorce from Linda, so his human side, aka the rejected Alec Holland, lashed out at her. He was still reeling from his divorce from Linda, so his human side, aka the rejected Alec Holland, lashed out at her. It resulted in Swamp Thing’s power maxing out, unleashing giant trees and roots and creating an apocalyptic garden in the New Orleans marshland that almost killed Ivy, Harley, Nora and innocent bystanders. His ego just could not take this hit after the fling, which explains why Linda wanted to leave: he was entitled and narcissistic. Joker has been childish and privileged too, but never to this extent, as he soon accepted the fact that Harley didn’t want him. Moreover, Swamp Thing lacked the literal elemental power to break Earth, which rendered him a more dangerous adversary.
Ivy and Alec were able to talk it out thanks to Harley’s psychoanalysis of the temper tantrum, which calmed the hurricane he caused in the ecosystem. In the end, Alec confessed that all he needed was Ivy as a friend. As she was now more human and understanding, she listened to his problems for the first time, so they made up.
It was this experience that cured Alec, transforming him from a delusional, jealous, petty man-child to someone who helped Ivy realize she could tap into the Green and locate Frank on her own. It does feel like they have a friend they can always rely on, despite the fact that he did not officially join the crew. As long as Nora and Alec maintain a civil and drama-free relationship, and he accepts her free-spirited nature in the future.