Well, aside from that weird mouth they all have that looks like they're trying to bite their cheek from the inside, I seem to give everyone an elongated eyelash that just hangs at the end of the eye. Mind you, my art style is simple cartoon so the "eyelashes" are practically non-existent, yet I seem to insist to give them a single eye lash line at the end.
Heck, two characters get unique eyelash ends.
Even the very first drawing, a sketch of the main character Mimsy, for this comic has them:
The only possibly explanation was that I was trying to mimic the style I used on the game the comic is based on, which was all the way back in 2014.
https://www.deviantart.com/toolkitz/art/Screenshots-836123356
https://www.deviantart.com/toolkitz/art/Story-Screenshots-836124226
https://www.deviantart.com/toolkitz/art/Bonus-and-Raise-Illustration-836125247
https://www.deviantart.com/toolkitz/art/Ending-Illustrations-836125452
But the rabbit hole goes even deeper. I have the very first drawings of Mimsy and Tahini from that time period and...
So yeah, those eyelashes go all the way back nearly a decade and the only explanation I have is that I was doing numerous projects at the time, I wanted everyone one of them to have a unique art style, or as unique as I can make them, and perhaps these eyelashes were a way to separate my project from the others.