Library Guards

Library Guards are the guards of the Royal Library of Banned Literature underneath the Royal Palace.

Appearance
The guards' outer appearance greatly resembles mythical demons shapes. One having the torso and head of a horse while the other having a bull-like appearance while their lower parts are human like.

Asmodeus Arc
The guards first appear as the very initial guard of the library, facing Blade and saying that they will not allow him to pass and calling him "Hero Blade". Blade, in a demonstration of his great speed, travels behind them and tells them that he is "Former Hero Blade".

Blade later reveals that he has defeated the guards.

Power and Abilities
Nothing much is known about the guards' powers however, Blade being able to defeat them easily could indicate that they're possibly capable of stopping normal or average intruders and heroes-in-training.

Trivia

 * Though they greatly resemble demons, they aren't confirmed as such yet.
 * They seem to know Blade's identity as the "hero".