Slicejaw

Adventurer of the Old World with Fancy
Survived the Great Apocalypse in the Mass Suspend Temporal Death ritual.
Head of security for the Academy
This character, their story, and their stat block can be found in the Adventurer Academy Staff Codex on DriveThruRPG:
https://www.drivethrurpg.com/product/329754/Adventurer-Academy-Staff-Codex-50-NPCs