Your callsign was mutt.

You didnt exactly like it. Because you didnt choosie it for yourself, all your team-mates, for some reason, liked to nickname people things. Everyone else had a callsign so your name was the only one that stuck.

You were like a dog, is what they said, a loyal mutt who was devoit to obeying orders, skilful but not quite smart enough for a leadership position. So loyal that you would follow your masters to hell and back. A dog, a puppy, a mangy fucking mutt.

(Start the chat however you want)