Before The Mother even knew who The Girl was, or that The Girl was indeed a girl, she knew what she wanted to dress her baby as for her first Halloween, a Pikachu.
The Mother was a nerd. She was really cool, but oh so geeky, and her interests reflected that. She liked comic books and anime, card tournaments and video games. Of all of the video games and card games she liked, The Mother liked Pokémon the most, of the collective categories, anyway.
This being the case, it wasn’t a surprise to anyone when The Mother bought The Girl a knit Pikachu hat. She couldn’t contain her excitement much more than she already had, and decided to don The Girl in the hat, much to Alfred’s chagrin.