Love and romance can also be a common theme, although it can be a bit controversial given their family relation in the official lore. However, in fanfiction, authors often re - imagine their relationship in a way that allows for a romantic connection. Also, the theme of self - discovery is present. They both are constantly learning about their powers and themselves, and fanfictions sometimes focus on how they help each other in this journey of self - discovery.
There's also 'Super Siblings in a Strange World'. This fanfiction takes a different approach. It shows how Superman and Supergirl interact when they are suddenly placed in an alternate universe. It has a lot of action and also delves into their family dynamic in a really interesting way. The author really captures the essence of their characters.
In fanfiction, their relationship can be developed by introducing a third - party threat that specifically targets their relationship. For example, a villain who tries to turn them against each other by spreading false rumors or creating misunderstandings. As they work through these issues, they come to understand each other better. Additionally, they could participate in joint training sessions. During these sessions, they can teach each other new techniques and improve their powers, all while building a stronger relationship.
In comics, Superman is usually stronger. His powers have been developed and refined over the years, and he often demonstrates greater physical strength and abilities compared to Supergirl. However, it can vary depending on the specific storylines and plot developments.
Superman is usually stronger. His physical abilities and experience give him an edge. But it depends on the specific comic version and plot. Sometimes Supergirl shows great potential and can hold her own against him, but overall, Superman is stronger.
Jimmy Olsen could also be a great character to include. He is Superman's friend and colleague at the Daily Planet. His loyalty and his ability to get into some sticky situations can add a touch of humor and also some interesting sub - plots to the Supergirl and Superman fanfiction.
Superman is generally considered stronger. He has greater experience and his powers seem to have reached a higher level of potency. However, it can vary depending on the specific comic storyline and interpretation.
One interesting storyline could be Supergirl and Superman teaming up to face a powerful new villain from another dimension. They would have to combine their powers and learn to work in perfect sync to defeat this threat.