There's often an OC named Lily who is portrayed as a super - smart student that challenges the academic status quo at Bayside High. She might be into advanced science projects and often teams up with Screech to create some really cool inventions.
Another popular OC is Jake. He's usually a new athlete at the school who has a rough past but is trying to turn his life around. He becomes friends with A.C. Slater and they help each other on and off the field, teaching each other about loyalty and determination.
Obviously, Zack and Slater are very popular as they are the main focus. Zack is popular because of his quick thinking and ability to get out of tricky situations with his charm. Slater is adored for his athleticism and his straightforward, honest nature.
Zack is often a popular character in the fanfiction. His charm and scheming ways from the original series usually carry over, and writers like to put him in all sorts of new situations in college. Slater is also popular. His athleticism and good - hearted nature make for interesting storylines, especially when it comes to his relationships and his attempts to balance sports and academics in college. Kelly is another favorite. Her popularity and fashion - sense can lead to stories about her trying to make a name for herself in the college fashion scene.
One popular RWBY Merc OC is 'Blade', who is known for his lightning - fast sword skills. He often takes on high - risk missions and has a reputation for always getting the job done. Another is 'Scarlett', a female mercenary with a fiery personality and the ability to control fire. She is often hired for jobs that require a bit of a show of force. Then there's 'Raven', not to be confused with the character in RWBY. This Raven is an OC who is a master of stealth and uses throwing knives as his main weapon.
Then there's Lyra. She's a female OC who is a brilliant scientist. She reverse - engineers some of the Omnitrix's functions and creates her own power - enhancing devices. She often teams up with other OCs and uses her intelligence along with the Omnitrix's powers to outwit their enemies.
Another well - liked OC is Max. He's a bit of a rebel on the ice. He has his own unique way of playing hockey that challenges the traditional Mighty Ducks style, which makes for some interesting storylines. He's also very loyal to his friends on the team.
Another theme is rivalry. They could be pitted against each other in a competition, either academic or non - academic. This rivalry can then lead to a better understanding of each other and ultimately strengthen their bond, whether it remains as friends or evolves into something more.
One popular theme is the 'will - they - won't - they' relationship aspect. Fans are always intrigued by the possibility of Zack and Jessie getting together romantically. So many fanfictions play around with this idea, creating situations where they almost confess their feelings or have a moment of realization about their attraction to each other.
One popular godlike OC is 'Arya Starborn'. She has the ability to control all elements in the Star Wars universe, from the deserts of Tatooine to the ice planets. Another is 'Kael Darklighter', who has a power level that rivals the most powerful Sith Lords, with the ability to absorb and redirect Force lightning. There's also 'Lyra Skywalker' (not related to the main Skywalker family in canon), who has a unique Force ability to foresee and change possible futures.
One popular male OC is Kai. He's often depicted as a strong and fearless warrior who has his own unique fighting style. Another is Leo, who is usually portrayed as a brilliant strategist within the Survey Corps. And then there's Max, a male OC known for his ability to adapt quickly to new situations and his unwavering loyalty to his comrades.
There's 'Luna', an OC often depicted as a half - moon spirit with the ability to manipulate moonlight. She's popular because she brings a touch of ethereal beauty and mystery to the Monster Prom setting. Her storylines usually involve her using her powers to create beautiful light shows during the prom or helping other characters with their personal problems under the moonlight.