Severus
Severus turned up and was very irritated. He could think of at least sixteen better things to do with his time. He'd also made the pointed comment to his team that they were on call and should therefore think long and hard about where they ought to be right now. He will be watching and anyone not turning up will be noted.
He generally lurked around the edges of the battle, looking intimidating and firing off spells that seemed to be quite dangerous and aggressive at various Order members and rebels.
[OOC: And as I was concentrating so much on Teodor that I forgot to line up something for Severus, anyone who wants at him is welcome to him, just tag in.]