"Rookie Killer" for Ober was no mere nickname; it was more like his personal creed.
He wasn't just called a Rookie Killer, he acted like one too!
Before becoming a ranked player in the Arena, Ober was once a mercenary who had spent a considerable amount of time with a Mercenary Group. Years of mercenary contracts not only gave him strength far beyond the ordinary but also taught him how to survive.
So when he saved enough money and bought a set of Void Magic Armor for himself, he left the Mercenary Group and started participating in the Arena competitions.
In theory, given Ober's strength and experience, plus a fourth-generation Special Armor, he could have easily advanced in the Arena. While reaching the very top might be unattainable, getting to around Ten-rank was definitely within his reach.
