The Riddle of GoGo Tomago

Ladies and gentlemen, young and old, here is a riddle that I wrote about GoGo Tomago, a character from Disney's recent [and Marvel Comics-inspired] Big Hero 6, and she of the bicycle and chewing bubble gum who is probably the coolest female character in the annals of Disney Animation (perhaps outside characters like Sleeping Beauty’s Maleficent, to say the least!), especially in recent years. So listen well, all of you!

I hail from San Fransokyo,

itself a mash-up of San Francisco and Tokyo.

I carry a backpack in my hand,

and I used the headphones that hugs my neck

to listen to my favorite music band.

I chew bubble gum,

And I ride a bicycle for fun.

My hair is as dark as night,

sans part of my hair which is purple but not lite.

And I am one of the mighty Big Hero Six,

and one of the comrades of Baymax and Hiro

if that fact could stick!

Who am I?

And what is my name?