In anticipation of the appearance of Midea's banner in the game, the developers of Honkai: Star Rail published a special video in which they talked about what the Son of Kremnos is capable of in battle.
Midey is a Fake-type character who follows the Path of Destruction. Using his basic attack, Midey deals fake damage to a target enemy based on their Max HP.
When using the skill, Midey spends HP to deal imaginary damage to the selected enemy and nearby targets. This skill does not consume skill points.
When losing HP, Midei gains a charge based on the percentage of HP lost. When enough charge is accumulated, he expends it to enter the Blood Feud state, which restores HP and advances his action forward. While in Blood Feud, Midei's max HP increases.
Taking a finishing blow will not disable Midey, but it will reset his charge, remove him from Blood Feud, and restore his HP.
When enough charge is accumulated, Midei expends it to gain an extra turn and unleash his most powerful attack, "Kill God to Become God", which deals massive imaginary damage to the target enemy and nearby targets.
Using the super ability, Midei deals imaginary damage to the target enemy and nearby targets based on his Max HP, and applies the Taunt status to the enemies. And the next attack "Kill God to Become God" will be dealt to enemies affected by the super ability first.