Strong Hooves gave an impressed whistle as he listened to Gizmo's story, "Yeah, I do remember that time" he said. "Well I guess I'll go next, Im sure you remember when we still had classes as little colts and fillies, I think we had the same class together Gizmo. Anyway, the teacher never really liked me all that much , called me a 'waste of time and energy' mainly because I just slept in class all day. I wasnt very social, mainly because I was so much bigger than the others and they shied away from me, so i spent most of my time with my dad during his patrol rounds. I idolized my father and everything he did. You all remember Commander Ironbuck right?" his father was a well known and greatly respected guard in the Stable, "Well, I wanted to be just like him, and it showed because I was the one who broke up most fights in school, standing up for the smaller colts and fillies who couldnt stand up for themselves. My dad saw this, and said that he was proud of what I did, he told me I was being a 'Shield against injustice' that I was 'A symbol of strength to others'. It was when he said this that I got this" he gestured to his cutiemark, "It is a celtic symbol that represents the shield of strength and protection, it was then that I decided to follow my father's hoofsteps and become a Stable guard".
(Here is what the symbol looks like of you are unfamiliar with it)