These are just random theories and stuff I found somewhere...

If they were in a battle ...( United)
Annabeth and Reyna would make the strategy, Hermione would help them with recommending different effective spells to put and where. Harry , Ron, Neville , Clarrise and the others would fight in front with some occasional people riding by in Thestrals and broomsticks, shooting spells. The Stoll Brothers and Weasley twins would come up with amazing prank traps , Hazel and Frank would be commanders, Leo would light up the enemies with his amazing inventions, Trolls, Giants and Tyson would charge together. Luke and Draco would be also on their side, Percy would control the water and Jason the wind , together forming a fierce storm. Nico would summon an army of dead soldiers and The hunters of Artemis will also join, Rachel Elizabeth Dare would try to predict where the enemies are coming from. Overall they would win and it would be a historic battle.

This is just something I imagined...🤗

Plus bonus:-

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