Who would be the most powerful in a 'Harry Potter meets Supergirl' fanfiction?

It's really hard to say. Harry has the power of magic, which is extremely diverse and can do everything from transfiguration to powerful offensive spells. But Percy has the power of the sea and is a demigod, which gives him superhuman strength, speed and the ability to control water. It could depend on the situation. In a water - based environment, Percy would likely have the upper hand, but in a more magically - oriented situation, Harry might be more powerful.

It's really hard to say. Harry has magic on his side, which gives him a lot of abilities like casting spells and using potions. But the Joker is unpredictable and extremely cunning. He can manipulate situations to his advantage without any magic at all. So it depends on the context. In Hogwarts, Harry might have the upper hand as he knows the place and has the support of the magical community. But in a more chaotic, unstructured setting, the Joker could prove to be a formidable opponent.

It's hard to say. Harry has magic, which is a very powerful force within the wizarding world. But the Doctor has his time - traveling TARDIS and a vast knowledge of the universe. If it's a battle of raw power in a magical sense, Harry might have the upper hand. But if it's about outsmarting an enemy or finding solutions across different dimensions, the Doctor would be very strong.

It's hard to say. Loki has a wide range of magical abilities from Asgard. He can shape - shift, create illusions, and has a certain level of telekinesis. However, Harry Potter has the power of love and friendship on his side, which has proven to be a very strong force in his world. Also, Harry is very skilled at defensive and offensive magic within the wizarding world. So it really depends on the situation.

In a 'Harry Potter meets Superman' fanfiction, the concept of 'more powerful' can be quite complex. Superman's powers are based on his alien physiology, which gives him extraordinary physical abilities. However, Harry's magic is not limited to physical combat. He can manipulate time, perform mind - controlling spells, and teleport. If they were to team up, their combined powers would be far greater than either one alone. But if pitted against each other, it would likely come down to who can outwit the other. Harry is used to thinking on his feet in magical battles, while Superman is used to using his brute strength. So it really depends on how the story is written.

Supergirl would be really interesting. Her alien origin and her super strength, along with her ability to fly, would make her stand out. She could bring a new dynamic to Team Flash with her different set of powers and her more idealistic view of heroism, which might contrast with some of the more street - level concerns of Team Flash.

It could be Harry Potter himself. He has defeated Voldemort, one of the most powerful dark wizards. His ability to perform advanced magic like the Patronus charm and his experience in facing great evils would give him an edge. He could also learn from the Olympian magic and become even more powerful.

Well, perhaps Harry could use his magic to help Supergirl when she's facing some kryptonite - induced weakness. His spells might be able to counteract the negative effects of kryptonite for a while.

Pairing Supergirl with Severus Snape could create a really dynamic relationship. Snape has his own dark past and complex personality. Supergirl could potentially see the good in him and try to bring it out. They could have a bit of a clash at first, with Snape being suspicious of her, but over time, they could develop an unlikely friendship or at least a mutual respect as they face common enemies in the wizarding world.

In an 'Ultron meets Transformers' fanfiction, if we consider raw power, the Decepticon leader Megatron could be a top contender. He has immense firepower and is a skilled warrior. However, Ultron's ability to hack and take over systems could give him an edge. The Autobots, led by Optimus Prime, also have their own strengths like their moral compass which could help them unite against a common enemy. So it really depends on how the story is written and the circumstances they are in.