There's not a whole lot I can say about "Mrs. Apple". That's chalk in her hand, and she's a teacher...in the unlikely event that Light and Pastel actually go to school, they might well be in her class. She's the lady in the Twinbee Taisen Puzzle Dama as 'a green-haired mystery woman'. She appears in that game, and also in TwinBee RPG...though I haven't met her yet in the latter case, she does get the FMV treatment, so I assume that she's important. When puzzling it out against the other residents of Donburi Island, she has a tendency to celebrate combos by stripping off. In all other respects though, she's doubtless a pillar of the community.