You’ve seen the blonde hair, the exposed torso, and that red lion spirit lurking in the background. Mydei—or Mydeimos if you’re being formal—is easily one of the most polarizing figures to walk the path of the Destruction. He isn't just another DPS. Honestly, he’s a massive experiment by HoYoverse to see exactly how much control players are willing to give up for raw, unadulterated power.
If you're coming from Blade, you think you know the "HP-for-damage" dance. But Mydei is different. He's weirder. Basically, he’s a stat monster who forces you to play his way or not at all.
💡 You might also like: Tarkov Break the Deal Ammo Pack: Why This Quest Item Is So Frustrating
The Auto-Targeting Drama Nobody Mentions Enough
Let's get the elephant in the room out of the way. Mydei has an "auto-battle" mechanic baked directly into his kit. When he enters his Vendetta state, you lose the ability to pick your targets. It’s kinda like the auto-curio in Simulated Universe but for a limited five-star character you probably spent real Jade on.
A lot of players hate this. They say it ruins the strategy of turn-based combat. If you're trying to focus down a specific boss in Memory of Chaos and Mydei decides to hit a random mob, it feels bad.
But there’s a nuance here most people miss. His Ultimate, Throne of Bones, has a built-in Taunt. This forces enemies to hit him, which in turn fuels his Charge. More importantly, the Ultimate actually fixes his targeting for one instance. It’s the only way to "steer" him during his frenzy. If you aren't timing that Ultimate to override his AI, you’re missing half the strategy.
Breaking Down the Kit: Why 0 DEF is a Good Thing
Mydei is an Imaginary Destruction unit who debuted in Version 3.1. His numbers are absurd, but his survivability looks like a typo on paper.
The Vendetta Loop
To understand Mydei, you have to watch his Charge bar. He gains 1 point of Charge for every 1% of HP he loses. Once he hits 100 Charge, he consumes it all to enter the Vendetta state.
- Action Advance: He gets a 100% action advance immediately.
- HP Buff: His Max HP spikes by 50%.
- The Catch: His DEF drops to 0.
Wait, zero defense? Yes. It sounds like a death sentence, but for Mydei, it’s a gift. Since he has no defense, enemies hit him harder. Because they hit him harder, he loses HP faster. Because he loses HP faster, he gains Charge at a breakneck pace.
At 150 Charge while in Vendetta, he triggers Godslayer Be God. This is an extra turn that doesn't consume skill points and hits like a freight train. It deals Imaginary damage based on 280% of his Max HP to a primary target. That’s why people are reaching 8,000 to 10,000 HP on this guy. He’s a tank that deals more damage than most glass cannons.
📖 Related: Kingdom Hearts 2 Final Mix Walkthrough: Getting Through Critical Mode Without Losing Your Mind
The "Death Proof" Secret
You’d think a guy with 0 DEF would die in one hit from a boss like the Harbinger of Strife. He doesn't. Mydei is famously difficult to actually kill because of his Death Proof trace.
He can essentially "die" up to three times without leaving the Vendetta state. When he takes a killing blow, he just clears his Charge, heals 50% of his Max HP, and keeps swinging. It makes him incredibly forgiving for players who don't have top-tier sustain units like Luocha or Aventurine.
Speaking of teams, he’s surprisingly flexible. While he wants to get hit, he doesn't necessarily need a shielder. In fact, shields can sometimes slow down his Charge gain. He pairs best with healers who can keep up with his massive HP pool or supports like Sunday and Tribbie who can manipulate the turn order or buff his specific damage type.
Relics and Stats: The 8,000 HP Threshold
If you’re building him, stop looking at ATK. It’s useless. Mydei is the second true HP-scaler after Blade, and he takes it to the extreme.
His final trace gives him a massive stat boost for every 100 HP he has over 4,000. To max this out, you need to hit 8,000 Max HP. If you reach that golden number, you get 48% CRIT Rate for free. That is insane. It means you can focus almost entirely on CRIT DMG and HP% in your relic sub-stats.
Most experts are running him on the newer 3.0 relic sets that reward HP fluctuations. For Planar Ornaments, anything that boosts Max HP or Imaginary damage is the way to go. Don't bother with DEF or Effect RES; let him get hit, let him get debuffed—he usually powers through it anyway.
Is He Just a Gilgamesh Clone?
The community has been vocal about the visual similarities between Mydei and Gilgamesh from the Fate series. The blonde hair, the arrogant pose, the golden/yellow skill effects. Honestly, the resemblance is there.
But lore-wise, Mydei is a lot more complex than a simple "king." In the Amphoreus arc, he’s a demigod who is literally designed to "suffer a thousand deaths." There’s a lot of weirdness in his story—glitches in his trailers, inconsistent memories of his mother, and golden scapegoat puzzles that replaced his memory fragments after Version 3.3.
Some lore hunters on Reddit suggest Mydei isn't even a "real" person in the simulation of Amphoreus. He might be a bug in the system. When March 7th tries to take a photo of him, her camera memory instantly fills up. That’s not a coincidence. HoYoverse is hinting that Mydei is "heavier" or more data-intensive than other characters, which fits the theory that he’s an anomaly.
The Actionable Verdict
Should you pull for him on his rerun? It depends on your patience.
If you hate the idea of a character playing himself, Mydei will frustrate you. You will watch him hit the wrong enemy and you will want to throw your phone.
However, if you want a character that can brute-force almost any content in the game without needing a perfect team, he’s your guy. He is the ultimate "low effort, high reward" unit.
Next Steps for Your Mydei Build:
- Prioritize HP% over everything. If you aren't at 8,000 HP, you're leaving a massive amount of free CRIT Rate on the table.
- Level his Talent first. His damage is tied to how quickly he enters Vendetta and triggers Godslayer.
- Learn the Ultimate override. Don't just fire off his Ultimate whenever it's ready. Save it for when you need to force him to target a specific boss or elite enemy.
- Watch his "lives." Keep an eye on his Death Proof stacks. If he's on his last "life," you need to prioritize a heal, even if he feels invincible.