Hieronymus



Hieronymus is a Raid boss in Blue Archive.

The main gimmick of this boss is that healers are an absolute must. Battle is split into two phases, with switch happening after a certain boss HP threshold is reached.

Green lantern will be present on field immediately at the start of a battle. Healing the green lantern applies a debuff on Hieronymus that stacks up to 5 times and increases all incoming damage. After each activation the green lantern receives a 20-second healing debuff that reduces all healing by 50%, so either find a way to heal it through it or wait for the debuff to fall off before healing it again.

Second phase adds a red lantern, activating it stops the boss from using his insta-kill attack and increases cost recovery by 2500. Note that if you are aiming to kill the boss in one round it's possible that he won't have time to use his instakill attack at all.

 