Leoric of the book ability with neutral attacks

By Antaleon, in Descent: Journeys in the Dark

Hi guys, we had a problem in the 2A encounter of the finale in Heirs of blood. In this game, Tyrus is not considered a monster, and is treated as a frendly figure by others, but he can attack heroes, so our question is: can Leoric use his ability to block 1 damage from Tyrus attacks, or this is applied only on attacks performed by monsters?

Edited by Antaleon

Leoric's Hero ability specifies "Each monster within 3 spaces ...". As Tyrus is neither hero nor monster in this encounter, Leoric's Hero ability cannot be used if Tyrus attacks.