[@Raijinslayer]
Except that Jane is ALWAYS with Maxie of course. And he's quite protective of his sister XD
Manami, power wise, isn't a huge threat to him. However her holy magic is the big thing she has. Maxie will easily go toe to toe, and I think it would be interesting to see who would win.
Georgie will mop the floor with him. And knowing her, quite literally.
EDIT: Also Lillith is probably the strongest outside the S-Class, she would be more than a handful. It was a toss up decision for Georgie to choose her or Manami
EDIT(Again): Or if Oswald ever regained his magic...you know for 'plot' reasons >.>
EDIT: And Shiro would be a pretty big pain