In fanfiction where Snape fights Voldemort, how would Snape's loyalty to Dumbledore play a role?

Snape's character might develop more positively. Without the burden of his past mistakes and betrayals haunting him, he could be more confident. He might be more open to forming friendships, especially with Dumbledore. Their relationship could start on a more equal footing, leading to a more trusting bond.

In some fanfictions, Snape's cane serves as a symbol of his authority. It can be used to intimidate Harry and the other students, like when he taps it on the floor to get everyone's attention. It represents his strict and often unapproachable nature.

In many such fanfictions, Dumbledore might comfort Snape by reminding him of his good deeds. For example, he could say that Snape's role as a double agent is crucial for the greater good. Dumbledore might also offer a sympathetic ear, listening to Snape's inner turmoil about his past actions and his love for Lily. By validating Snape's feelings and his importance in the fight against Voldemort, Dumbledore provides comfort.

Snape's brooding and mysterious personality might work in Hermione's favor. His intimidating presence alone could deter some of her enemies. People in the wizarding world might be afraid to cross him, so they would think twice before harming Hermione if they knew Snape was protecting her.

In some fanfictions, Snape kills Dumbledore as part of a greater plan. Maybe Dumbledore was already dying or had some sort of incurable dark magic on him, and Snape's act was a mercy killing. It could also be a complex plot twist where Snape is actually trying to protect the wizarding world from a greater threat that only he and Dumbledore knew about.

Hermione's intelligence allows her to understand Snape's complex nature. She can analyze his actions and words more deeply than others. For instance, when Snape is being particularly harsh in class, Hermione realizes it's often because he's under a lot of pressure or has high standards. So she can comfort him by saying she understands his intentions. Her knowledge also helps her to find solutions to problems that are bothering Snape. If there's an issue with a potion or a magical object, Hermione can use her vast knowledge to fix it, which in turn comforts Snape as it eases his stress.

Well, it would be a lot less antagonistic. Without the whole Death Eater past and the spying for Dumbledore while seeming to be on Voldemort's side, Snape wouldn't have that built - up resentment towards Harry. He might actually see Harry as a talented young wizard worthy of proper mentorship, instead of constantly being so harsh on him.

Dumbledore can hurt Snape in fanfiction by taking advantage of his love for Lily. He might use this love as a tool to manipulate Snape into doing dangerous tasks. For example, making Snape spy on Voldemort, knowing full well that Snape's life is at risk every time he does so.

One possible reason could be that Snape fails to deliver crucial information. Voldemort is a very demanding and unforgiving master. If Snape doesn't give him accurate details about the Order of the Phoenix's plans, for example, Voldemort would surely be enraged and punish him.

In the fanfiction, Snape could protect Harry from Dumbledore by using his skills in potions. For example, he might create a potion that hides Harry's magical signature from Dumbledore's detection. Or he could use his knowledge of the Dark Arts to counter any spells or charms that Dumbledore might use to keep tabs on Harry. Snape is very intelligent and resourceful, so he could find various ways to physically and magically shield Harry from Dumbledore.