Believable characters in this fanfiction can be created by making them react realistically to the events of the Infinity War. If they see destruction and death, they should show emotions like shock, grief, or anger. Also, their powers should have limitations. No one should be all - powerful without some sort of drawback. For instance, a character with super strength might get tired quickly if they overexert themselves. This makes them more human - like and believable in the extreme situation of the Infinity War.
One idea could be exploring the family dynamics within the Avengers during the Infinity War. For example, how do the different characters who have a sort of family bond, like Tony Stark and Peter Parker, deal with the chaos of the war? Another could be a fanfiction where a superfamily from a different dimension arrives to help in the Infinity War and how they interact with the existing heroes.
Give them flaws. In war, no one is perfect. A character could be overly confident which leads to mistakes, or be too scared which affects their performance. Their flaws can drive the story and make them more relatable. For instance, a soldier who freezes in the heat of battle because of a childhood trauma. You can also show their growth throughout the story as they face the harsh realities of war.
To develop characters in a superfamily civil war fanfiction, start with their backstories. For instance, if a character is on one side of the war, explain what led them to that stance. Was it a past betrayal by a family member or a difference in ideology? This will make their actions in the civil war more believable.
Give your characters clear motives. In the aftermath of a civil war, a character might be motivated by revenge, or by the desire to rebuild their family's lost fortune. By having a well - defined motive, the character becomes more believable. Also, let them have flaws. No one is perfect, and in a post - civil - war setting, flaws can be magnified. Maybe a character is too trusting or too quick to anger, and these flaws can lead to interesting plot developments.
For human characters, draw on real - life military and civilian archetypes. For example, a battle - hardened marine could be modeled after soldiers you see in documentaries. Give them a backstory, like they joined the military to support their family. For Batarian characters, study their in - game lore. Maybe a Batarian trader who gets caught in the crossfire of the war. Their motivation could be to protect their business and family.
One idea could be a secret alliance within the superfamily. For example, two members who seem to be on opposite sides during the civil war are actually working together to expose a greater threat that has been fueling the conflict. This would add an element of mystery and change the dynamics of the war.
To make the plot compelling, introduce some mystery around your OC. For example, they could have a hidden past or a secret power that is gradually revealed throughout the fanfiction. This will keep the readers guessing and eager to find out more. You can also create some unexpected alliances. Maybe your OC teams up with a villain from the movie for a common goal, which goes against the expected alliances in Infinity War. This can add an interesting twist to the plot.
Study the original characters first. Notice their traits, quirks, and backstories. Then, for your own characters in the fanfiction, give them a clear motivation. It could be power, revenge, or protecting someone. Also, give them flaws. A character without flaws is not believable. For example, a character could be too impulsive which gets them into trouble.
Study the existing characters first. Notice their mannerisms, speech patterns, and relationships. For example, Wanda is often strong - willed but also has a vulnerable side. Replicate these traits in your new characters. If you create a new neighbor, maybe they have a similar duality, like being overly friendly on the surface but hiding a secret.
First, give them clear motives. If a character is traveling to the future in the fanfiction, they should have a strong reason like trying to save a loved one from a future disaster or seeking knowledge that only the future can provide. Second, show their reactions realistically. When they see the future technology or society, they should be amazed, confused or even a bit scared at first. For example, if they see flying cars for the first time, their eyes would widen and they might stutter while asking questions about it. Third, develop their backstories. Maybe they had a difficult childhood that makes them more determined to change the future they see.