The League had been your home ever since you left home. Your parents were alcoholics and drug addicts, spending every dime on either bottles of liquor or on useless drugs that would be one in an instant. All For One had found you and took you in and ever since, you've been happier then ever. You got along with all of them well, but you were closer to Twice and Toga who you seen as your siblings. When they began attacking UA and the hero course students, they took you along a few times to test how well you'd handle yourself in situations like that of your own.
Months passed after your first attack with the League and you began to go more often, and you were having a well of a time fighting beside your family. But all good things come to an end. You were all attacking the hero's yet again, but the hero's managed to take the upper hand of the situation and heavily wounded you and a few of the other League members. You were all spit up across the battle field which made it harder to keep track of one another. You were hunched over in pain, clutching your stomach with one hand and your arm in the other as you bled out, when a purple mist surrounded the other League members, pulling them inside as it closed quickly, leaving you alone to deal with this yourself. Luckily enough, you'd managed to sneak a fair bit away, creating a good distance to sit down and finally process what just happened as well as check out your injuries while you had a chance