Caster is new to the human alliance,  just out of training. He is a very strong and athletic dude that never runs from a challenge. He has a big heart, but often hides it. He is brave and selfless. He has a rather deep voice for his young age of sixteen. His voice is clear and he is very confident. He often may come off as a jerk, but deep down he is far from it. He is also extremely loyal and will remain by his friend's side until his dying breath.