I don't know for sure as I haven't read it. But it could be original characters created by the fanfiction writer, or it might feature characters from an existing franchise that the fanfiction is based on.
Since there's no information about the actual content of 'Fridays at Noon' fanfiction, the main characters could be anyone. They could be students if it's a school - related fanfiction. Or if it's a fantasy - based one, they could be wizards, warriors or magical creatures. It all depends on the genre and the plot that the writer has come up with.
There's no way to accurately say who the main characters are without reading the 'Fridays at Noon' fanfiction. However, in most fanfiction, the main characters are often those that drive the story forward. So they could be characters with unique personalities, goals or problems. Maybe there's a protagonist who is trying to change something in their world and Fridays at noon is a significant time for their efforts.
Chapter 498, "How can someone be so ugly?!", is the clearest early answer because it turns Jiang Li's situation into a concrete plot event. The chapter turns that into something concrete by moving from .....If you don't love me, give my heart back, you traded love for my...
Chapter 602, "Did Our Ship Capsize Too?!", is the clearest early answer because it turns Jiang Yan's situation into a concrete plot event. Early on, Hmph." Jiang Zhao Yuan grunted again, "Has anyone been bullying you?"....
Chapter 618, "Abandoned Again", is the clearest early answer because it turns Sister Xiao Wan's situation into a concrete plot event. The chapter turns that into something concrete by moving from Upon hearing this, Jiang Cheng looked at Su Yinwan in disbelief.
Chapter 841, "Isn't this Daniu?", is the clearest early answer because it turns Gu Qiang's situation into a concrete plot event.
Chapter 861, "Add the Link!", is the clearest early answer because it turns Taoist's situation into a concrete plot event. Early on, At exactly ten in the morning, Jiang Li started her live stream.. By the end, Changqing curiously leaned over for a look, and his ears instantly....
Chapter 859, "I Bet She Won't Last Ten Minutes!", is the clearest early answer because it turns Jiang Bufan's situation into a concrete plot event. The chapter turns that into something concrete by moving from All morning, the two little ones were quiet, not making a peep, even...
Chapter 884, "Master?!", is the clearest early answer because it turns Qixing Tower's situation into a concrete plot event.
Chapter 690, "Miss Jiang, Marry Me!", is the clearest early answer because it turns Now's situation into a concrete plot event. The setup is No wonder she had predicted she would come into some unexpected..., but the pressure keeps building through Someone was bringing money right to her door..
Chapter 498, "How can someone be so ugly?!", is the clearest early answer because it turns Shang Shaojing's situation into a concrete plot event.
Chapter 551, "Who is Reciting "Student Rules"?", is the clearest early answer because it turns Hua University's situation into a concrete plot event. The chapter gives readers a real answer by opening on Other competitors were already in place, and Qi Tianyu was the last...