Lois Lane can also be quite popular in these fanfictions. She might be involved in the story as a journalist trying to report on the events involving Superman and Supergirl. Or she could be in a relationship with Superman and have to deal with the new dynamic when Supergirl enters the picture.
Well, obviously Superman and Supergirl are the most central characters. But other popular characters often include Lex Luthor. He is always a great antagonist, constantly devising new plans to take down the Kryptonians. His intelligence and deviousness add a lot of tension to the stories.
Jimmy Olsen is another character that can be popular. He could be the one who discovers something important about the situation where Superman meets Supergirl, like some strange new technology or a secret enemy plot. His role as the photographer and general helper at the Daily Planet gives him a unique perspective in the fanfiction stories.
Kara Danvers (Supergirl) is also very popular. Her superpowers and kind - hearted nature make her a central figure. Fans love to see her interact with the more grounded characters from Arrow, like when she tries to understand their more human problems despite her god - like powers.
Obviously, The Flash and Supergirl themselves are very popular. Their unique powers and personalities make them central to most fanfictions.
Well, obviously Supergirl and The Flash themselves are very popular. They are the main characters in their respective shows and fans love to write about them in different scenarios. Also, villains like Reverse - Flash are often popular in fanfiction as they add a lot of conflict.
One interesting plot could be that they team up to fight a new and extremely powerful villain from another dimension. This villain has powers that neither Superman nor Supergirl has faced before, forcing them to combine their unique abilities in creative ways.
Superman himself is often very popular as he brings his iconic powers and heroic nature to the fanfiction. In the X - Men side, Wolverine is a common favorite. His rough - and - tumble attitude and his cool mutant powers make him stand out. Also, Jean Grey is popular because of her powerful telepathy and telekinesis, and her complex character arc.
Catwoman can also be a popular character. Her ambiguous moral standing and her relationship with Batman can create interesting sub - plots in the fanfiction. She might get involved in a scheme that involves both Superman and Batman, either as an ally or an adversary depending on the story.
One popular storyline is where Flash and Supergirl team up to fight a common, powerful enemy like a super - villain from another dimension. They combine their speed and strength in unique ways to save the world. Another is a more character - driven plot where they develop a romantic relationship. Flash's quick - witted charm and Supergirl's strong - willed nature make for an interesting dynamic. There are also storylines where they swap powers temporarily, leading to humorous and action - packed situations as they learn to use each other's abilities.
Lois Lane is often a popular character. In fanfiction, she might play a crucial role in mediating between Batman and Superman or getting involved in their adventures in a more hands - on way, using her investigative journalism skills.
Alfred Pennyworth is quite popular too. He can offer his wisdom and support to Batman, and his interactions with Superman can be both humorous and heartwarming. He's like the glue that holds things together in the Batcave, and his presence can bring a sense of home to the story.
Another plot twist might be that an alien force manipulates their DNA, causing them to swap powers temporarily. So Supergirl has Superman's classic powers like super - breath and Superman has to adjust to Supergirl's more heat - based vision and flight style. This would force them to rely on each other in new ways and learn from one another's experiences.