Well, it really depends on the nature of the fanfic. If it's a violent or dark Death Battle fanfic, the MLP characters might be horrified or confused as they come from a generally more positive and friendly world. They might try to find ways to bring peace or kindness to the situation depicted in the fanfic.
They could be shocked. Since MLPs are used to a world where friendship is key, seeing the brutal battles in Death Battle fanfic would be quite a contrast. They might try to flee from such a situation.
Twilight Sparkle would likely be devastated. She would probably try to use her magic to bring Rainbow Dash back, spending countless hours in her library researching any possible spells or solutions. Pinkie Pie, on the other hand, would initially be in denial. She would keep waiting for Rainbow Dash to show up at parties and do all the fun things they used to do together.
I often find that the best death battle fanfiction are the ones that not only focus on the fight itself but also explore the characters' emotions and motivations. It adds depth to the story. Like, a character's reason for entering the death battle could be more than just for power or glory, it could be for revenge or to protect someone they love.
Well, it really depends on the characters. Some might be shocked at how they're portrayed in the fanfiction. For example, a heroic character might be dismayed if they're shown as a villain in the story. Others could be amused, especially if the fanfiction has some really out - there or comical interpretations of them.
Some DBZ characters might be confused by the out - of - canon scenarios in Death Battle fanfiction. For example, Goku, being a pure - hearted fighter, might be a bit puzzled by some of the more extreme or uncharacteristic match - ups in the fanfiction.
He would probably be shocked. The fanfic might have some very different takes on combat and characters that he's not used to.
They could be angry. Consider a character like Ichigo from Bleach. If the fanfiction makes him look weak or changes his character in a way that goes against his core values, he would likely be furious. After all, he has his pride as a Soul Reaper and a protector.
The ponies represent friendship. They are always there for each other, through thick and thin. For example, when one pony is feeling sad, the others will come around and cheer it up.
The ponies might use their magic. For example, Twilight Sparkle could use her powerful spells to create barriers or attack the zombies directly. Some ponies with strong physical abilities like Applejack could use their strength to knock down zombies. They could also work together as a team. The pegasi might use their flying skills to scout for danger and lead zombies away from the group while the earth ponies and unicorns handle things on the ground.
Iida would probably be very vocal about any inappropriate or unethical content in the fanfiction. He has a strong sense of justice and propriety, so if there are any elements that go against his values, he would not hold back in expressing his disapproval.