Alastor had seen her before now, of course. There wasn't anyone within two metres of him who hadn't been noted and examined in his habitual way of cataloguing his surroundings.. But, sociability was hardly his strong suit. Although, he supposed he'd have to get used to it once he officially moved into his new post.
As he and Marlene weren't speaking, she had in fact moved out and taken no one with her, the only reason he was even there and dressed in something resembling a costume was the political necessity. Still, Alastor could afford to be polite until given a reason not to be.
"Macmillan," he said evenly, giving a polite nod in greeting.