HP

Formula
We focus exclusively on how a boss's hit points (HP) is calculated. There are two applicable formulas, the first of which is relevant at least for bosses, HP = floor(375 * lv_mult * (lv_mult_2) * co-op_mult * (co-op_mult_2) * hp_correction_value * (hp_correction_value_self) * hp_base_mult), and the latter of which is of unknown relevance for now, HP = floor(lv_mult * co-op_mult * (co-op_mult_2) * (hp_correction_value_self) * hp_base_mult).

Several of these variables depend only on the boss' level, and are given as follows. Finally,  is boss-specific, and   is generally. Combining this information, we find * Minimin is considered a funnel object. ** Breakable objects (yakumono) generally have fixed HP and take a fixed amount of damage (1) per hit. Whitetail's cup is the only notable object of this type.

Godly bosses generally have a level of 80, whereas Adv+ bosses generally have a level of 70. Bosses of other difficulties are of generally variable level.