You know between teaching (and possibly rising) Iris from Material Sniper and knowing Angelica, it seems he have been a part of the Gunslinger Girl project, most likely a handler.
InertiaNine said: "And this flower, here? That's the "fuck you" flower. Wear it when you want to give the other guy something to look at before he bites it."
And just like that, there's spit all over my screen.