Librarian

Librarians are enemies found in the Astrolab, wearing a yellow hood that covers their face. They ride on top of a large magical book, floating around in the air.

Behavior
Upon spotting the Beheaded, it will hover above them and summon a beam of magic, dealing massive damage, three times, before starting to hover around for a while.

Strategy

 * Its one and only attack cannot be parried or blocked as it is a vertical attack.
 * Normally the only way to dodge the beam is to roll, but it can be outrun when having an active speed buff. However, if you are near a wall, running directly into it causes the Librarian to hover in front of you, causing the beam to miss entirely. this only works if you keep running into the wall for the duration that the Librarian attacks for.
 * Some weapons that have a large vertical hitbox, such as the second and third hit of Rhythm n' Bouzouki, can hit them while they're above you.

Trivia

 * Librarians were added with the v1.4 update, aka Who's the Boss Update in August 2019 as an enemy deriving from the fourth boss.