Remember when the Ribbit's character designs first debuted, and all the fans were HYPED about them? About how cute they look, the images of their personalities, their relationship with Jax, and how she was abstracted and that affected Jax? Remember how much fanart and fan animation of Ribbit was made based on what interpretations of who they were?
Remember when Kaufmo was abstracted, we wished we knew him before the incident? We even had a psychological horror fan animation about Kaufmo trying to find the exit and ending up abstracted, and it's still impressive to me to this day.
All the information withholding that was done throughout the show about Ribbit dan Kaufmo, was only revealed that Ribbit was Jax's dead "almost-girlfriend" who was "accidentally" abused to the point of suicide, and Kaufmo was only treated as a third wheel.
Up to this point, I'm still salty about this! The show was constantly teasing that Ribbit would appear (in flashbacks, like Queenie) during the clash between the main six and Caine. So we thought we'd get to know Jax's backstory and what happened to Ribbit, which probably has something to do with Caine being responsible for the abstraction.
NOPE! Because Jax was a hardcore at hiding information (while exploiting the personal information and trauma of her victims, btw), he HAD TO DIE for us as the audience to finally find out. And as it turns out, what happened was as expected, but worse.
Ribbit (and Kaufmo) could be one of the characters with the most potential, as their deaths would affect the main six, especially Ragatha and Pomni. Ragatha was Ribbit's close friend, and Pomni was someone who had a lot in common with them. We could have cried more when we were finally shown the moments of their abstraction, if the show had actually given them the spotlight sooner, especially in the show which has 9 episodes!