Peter - 4
Of course they were the lasts around the pool, trying to kill those bloody birds. Harry was there too, casting spells with his right and left hand, meaning that half the spells were cast without a wand. He would have been more impressed if he weren't trying to stop those birds from setting everything on fire.
Seeing Remus go down though was a shock. Of all of them, Remus was the fastest, the hardest to hit, the strongest. "Sirius, grab Remus and get him out," he yelled.
He began covering Sirius, but then he saw a bird go after Albus. He was hexed the bird, but he was too late. Running toward the attack, he hexed the bird, which veered up. Peter bent down to pick Albus up. "Come on, we need to get you out," he said, grunting through the pain when one of the birds scratched him. He turned and cast another spell, killing the bird and the left the room with Harry destroying the last birds and then walking through the school to take care of the others.