Mydei 
Destruction Kremnos, the mist-shrouded city of chaos and war! Its royal lineage is tainted with patricide, and its god bears the name of calamity. The undying Mydeimos, the lion apart from the rest. Chrysos Heir who seeks the Coreflame of Strife, must suffer a thousand deaths, be bathed in blood on the path home, and bear the madness of fate alone. — Kingslayer be king, godslayer be god. Iron-hooves pound across the wilderness for the campaign, and must eventually soak in the blood of their homeland.
HP
ATK
DEF
SPEEDMain DPS Build
Best Light Cone
Mydei Best Stats
Mydei Best Substats
Mydei Best Teams
Mydei F2P Team
In this free-to-play team, Mydei can use the Remembrance Trailblazer for the CRIT DMG buff and Pela for DEF shred. Lynx is a great free-to-play sustain for Mydei as she can increase his Max HP and his chances of getting hit by the enemy.
Mydei Premium Team
Mydei's best team features Cyrene for her DMG buffs, and Cerydra's Skill DMG buffs. With Cyrene on the team, Hyacine should be your sustain unit since she is a Chrysos Heir and can increase Mydei's HP. If you don't have Cyrene on the team, we recommend using other Abundance units like Luocha and Gallagher since they provide more healing.
Mydei & Castorice Dual DPS
Mydei can also be used as a Sub-DPS for Castorice. Mydei's HP consumption can buildup Newbud for Castorice's Ultimate. Tribbie will buff both Mydei and Castorice with her buffs, while Gallagher can use the Besotted debuff to provide constant healing.
Skills
Deals Imaginary DMG equal to #1[i]% of Mydei's Max HP to one designated enemy.
Consumes HP by an amount equal to #3[i]% of Mydei's current HP. Deals Imaginary DMG equal to #1[i]% of Mydei's Max HP to one designated enemy and Imaginary DMG equal to #2[i]% of Mydei's Max HP to adjacent targets. If the current HP is not sufficient, using Skill reduces Mydei's current HP to 1.
Restores HP by #3[f1]% of Mydei's Max HP and accumulates #5[i] Talent's Charge point(s). Deals Imaginary DMG equal to #1[i]% of Mydei's Max HP to one designated enemy, and deals Imaginary DMG equal to #2[i]% of Mydei's Max HP to adjacent targets. Additionally, Taunts the target and targets adjacent to it, lasting for #4[i] turn(s). The next use of "Godslayer Be God" prioritizes attacking one designated enemy, and this effect only works on the latest target.
For each 1% of HP lost, accumulates 1 point of Charge (up to 200 points). When Charge reaches 100, consumes 100 points of Charge to enter the "Vendetta" state, restores HP equal to #1[i]% of Mydei's Max HP, and advances action by 100%. While the "Vendetta" state is active, Max HP increases by #5[i]% of the current Max HP and DEF remains at 0. At the start of this unit's turn, automatically uses "Kingslayer Be King." When Charge reaches #3[i] points during the "Vendetta" state, Mydei immediately gains 1 extra turn and automatically uses "Godslayer Be God." When receiving a killing blow during the "Vendetta" state, Mydei will not be knocked down, but will clear his Charge, exits the "Vendetta" state, and restores HP by #4[i]% of his Max HP.
Gain 1 extra turn that won't expend your remaining turns when taking action. During this extra turn, no Ultimate can be used.
An ally will be incapacitated once their HP is reduced to 0.
After using Technique, pulls in enemies within a certain area and inflicts Daze on them for #1[i] second(s). Dazed enemies will not actively attack ally targets. If actively attacking Dazed enemies, when entering battle, deals Imaginary DMG equal to #2[i]% of Mydei's Max HP to all enemies, and Taunts the targets, lasting for #4[i] turn(s). This unit accumulates #5[i] point(s) of Talent's Charge.
Traces
Eidolon
Increases the DMG multiplier dealt by "Godslayer Be God" to the primary target by
During "Vendetta," the DMG dealt by Mydei ignores
Skill Lv. +2, up to a maximum of Lv.
While in "Vendetta," increases CRIT DMG by
Ultimate Lv. +2, up to a maximum of Lv.
When entering battle, immediately enters the "Vendetta" state, and lowers the Charge required for "Godslayer Be God" to