Granz Locker

Granz Locker is an undead magic caster who is a member of Corpus of the Abyss. Alongside Kunivela, he has migrated to an unknown city after it fell into ruin.

Background
Granz Locker was one of the oldest member of the Corpus of the Abyss's inner circle. According to Benjeli Ansis, it was not unusual for Granz Locker, who had no maximum lifespan, to lose himself in research; hence, his assumed self-isolation from the rest of his members.

The Vampire Princess of the Lost Country Arc
That one day in particular, it was said one of his fellow members, Banezeri Anchas was hoping to visit Granz Locker's stronghold with the intention of trying to learn how he reach the 8th tier from him. However, Granz was not around during that time. When Banezeri checked his stronghold, Banezeri noticed that everything belonging to Granz including his research and wealth had been taken away. Apart from Kunivela, Granz Locker is most likely one of the liches, Suzuki Satoru had killed in its stronghold. Suzuki and Keno are the two who were presumed to have taken the lich's personal belongings before leaving his place. After they left for some time, Banezeri would arrived to his colleague's stronghold to discover the current situation.

Abilities and Powers
According to Banezeri, Granz Locker is a practitioner of the 8th-tier magic. As he has a high-ranking status in the group, Granz had dozens of servants such as Elder Liches on guard duty for him.

Banezeri Anchas
It seems Granz had a cordial relationship with Banezeri as the latter has to pay various prices in being able to visit his stronghold.

Trivia

 * Based on Keno's estimation of this undead's strength, he was considered the first powerful foe which Suzuki Satoru had encounter before shortly getting killed by him afterward.