Theo-Walden-Kat-Ron
Theo was not normally a fighter. Sure, he could duel and he knew more ancient Dark curses than most, but he'd never been in a battle. The last one had not concerned him, this one did. He wasn't fighting for the people in the castle, those - for the most part - he couldn't care less about. No he fought for revenge for Charlotte's death. For protecting all that was his. His family. His home. His way of life.
He didn't hesitate to use every dark spell he could think of. There was no time for the niceties, it was live and fight or die. Every spell out of his wand was lethal, and he tried to keep up as the Death Eaters swarmed the grounds around him.
He spotted the green light too late, and knew he'd failed to duck even before it hit him.