Teo.
Not at all one to let his family fight a battle without him, Teo was at Los, waiting for the battle to find them. As the pack dispersed into their plans and spots, Teo stepped out into the streets to help the fighting. He stayed at the entrance to slow the surge into the vulnerable population, giving those who couldn't fight time to get to safety were they able. He stayed on the streets, keeping the insurgent teams at bay and pushing them back as much as he could. It was slow-going, gruelling. He kept his eye out for tell-tale signs that Casey had succeeded -- as much as those might be made apparent in such a situation. As the battle wore on, he directed fellow quidditch players who turned up to fight in areal assistance and surveillance as groups kept on Knockturn, passing the knowledge along to those leading groups and directing fighters to try and meet those waves.
After the battle was over, and victory was claimed, Teo's first order of business was finding his family. Making his way to count the pack, his parents, Angie's, and then Casey. With great relief, he embraced Casey for a long, long, long, long time as weariness caught up with him. Alex was the next order of business before a shower, rest, and cleaning efforts began.