
About
Race: Human
Class: Guardian
Subclass: Gladiator
Guild: Black Sword Knights
Isaac, also known as Black Sword Isaac, is the guild master of Black Sword Knights.
(Source: Log Horizon Wiki)
Voice Actors

Hino, Satoshi
Japanese
Manley, George
English
Chiesse, Nestor
Portuguese (BR)
Pagès, Jean-François
French