S Tier: Meta-Defining Powerhouses

These combatants in the Chaos Zero Nightmare character tier list dominate with self-sufficient kits, high scaling, and broad team fit. Prioritize banners featuring them as they clear content solo or elevate any squad.

Character	Role / Type	Description
Cassius (4-Star Instinct Controller Support)	Support / Controller	A card shuffler who relies on luck, discarding cards for new draws and targeting enemies with his ultimate. He can gain free AP and extra draws using Pop Eyed Popper chains. Works well with Renoa or any unit that uses low-cost cards. Focus on maxing Ego Skills for better draw flow and use Void Echoes for Exhaust setups.
Kayron (5-Star Void Psionic DPS)	Damage Dealer	A strong attacker who builds power with Exhaust stacks, using skills like Black Hole and Brand of Annihilation for heavy single or area damage. He boosts his own damage through enemy Exhaust and shines in long battles. Best with Orlea and Luke. Focus on high-cost cards and Void modules to increase Exhaust effects.
Khalipe (5-Star Instinct Vanguard Tank/DPS)	Tank / Damage Dealer	A durable fighter who hits multiple enemies, gaining AP and breaking defenses when using 2-cost or higher cards. Strong in both offense and defense, great for early to mid stages. Works best with Magna and Mika. Use defense-based modules and Instinct Echoes to boost counter damage.
Mei Lin (5-Star Passion Striker DPS)	Damage Dealer	Focuses on fast, single-target attacks that take advantage of Passion Weakness for quick kills. She can handle fights alone and keeps turns going with low AP use. Best with Selena and Mika. Use Passion modules for high bursts and low-cost Echoes to chain attacks easily.
Mika (4-Star Justice Controller Support)	Healer / Support	A healer who restores AP, cleanses allies, and keeps the team alive with strong healing. Fits in almost any team and is great for free players. Works well with everyone, especially Kayron. Use Justice Echoes for AP recovery and upgrade healing Ego Skills first.
Rin (5-Star Void Striker DPS)	Damage Dealer	Excels in chaining 0-cost single attacks and builds strength in Dark Cloud stance. Though setup takes time, she becomes very strong in boss fights. Works best with Rei and Nia. Focus on Void modules to keep stance active and Echoes that help draw more cards.
Selena (4-Star Passion Ranger DPS/Support)	Support / Damage Dealer	Buffs the team and applies Marks that allow Extra Attacks while adding Passion effects. Provides both damage and shields to the team. Best with Hugo and Mei Lin. Use Passion Echoes for more Mark triggers and support modules for better shielding.

A Tier: Versatile Enablers & Solid Carries

A tier is trong in 70% of scenarios and these need minor investment for peak performance. In the Chaos Zero Nightmare tier list, these are great for F2P fillers or banner chases.

Character	Role / Type	Description
Beryl (4-Star Justice Ranger DPS)	Damage Dealer	Uses Charged Shot to deliver powerful one-turn attacks. Her passive skills work even when it is not her turn, rewarding patient play. Works best with shield-based teams. Start with Retain modules and medium-cost Echoes.
Haru (5-Star Justice Striker DPS)	Damage Dealer	Uses Anchor Shot to deal strong single or AoE damage while searching cards. Builds strength over time and serves well as a main attacker but uses a lot of AP. Best with Cassius and Mika. Focus on high-cost Justice modules and Echoes that improve Anchor skills.
Hugo (5-Star Order Hunter DPS)	Damage Dealer	Specializes in quick Extra Attacks with Hunt Commence for constant hits. Works perfectly as a sub-DPS and needs little setup. Best with Nia and Selena. Build with Order Echoes for speed and modules for skill cards.
Magna (5-Star Justice Vanguard Tank)	Tank	A defender who stacks counters and shields to strike back at enemies. Acts as both tank and attacker, boosting the team’s front line. Best with Khalipe and Maribell. Use defense modules and counter Echoes.
Maribell (4-Star Passion Vanguard Tank)	Tank	Turns shields into damage using Shelter Strike for big hits. Easy to use and great for free players. Best with Magna and Mika. Build with Passion shields and low-cost Echoes.
Nia (4-Star Instinct Controller Support)	Support / Healer	Buffs allies for Extra Attacks while healing and triggering Joint Attacks. Great for multi-hit teams and strong utility. Best with Hugo or Selena. Use Instinct modules for better buffs and healer Echoes.
Orlea (5-Star Instinct Controller Support)	Support / Healer	A healer and buffer who benefits from a full hand of cards. Can handle many roles and fits different setups. Best with Kayron and almost any ally. Focus on Retain-based builds and Instinct Echoes.
Rei (4-Star Void Controller Support)	Support	Buffs and draws cards for 1-cost users while dealing light damage. Works well for free players and improves team hand quality with Exhaust. Best with Rin. Use Void modules and draw Echoes.
Renoa (5-Star Void Hunter DPS)	Damage Dealer	Focuses on single-target attacks and follow-ups with Dirge for self-healing. Her playstyle needs setup but pays off. Best with Nia and Cassius. Build with Bullet modules and low-cost Void Echoes.
Tressa (4-Star Void Psionic DPS)	Damage Dealer	Uses 0-cost daggers to deal continuous damage over time and adds light healing. Keeps steady pressure on enemies and supports follow-up attacks. Best with Kayron. Focus on DoT modules and low-cost Echoes.
Veronica (5-Star Passion Ranger Support/DPS)	Support / Damage Dealer	Summons a Ballista that deals end-turn damage and helps draw cards. Works as a sub-DPS with a focus on setup and planning. Best with Nia. Build with Passion modules and summon Echoes.

B Tier: Niche Picks for Specific Setups

B tier combatants in the Chaos Zero Nightmare character tier list are viable early or in hyper-focused teams, but they demand upgrades and precise play. So it is better use them as swaps if higher tiers are unavailable.

Character	Role / Type	Description
Amir (4-Star Order Vanguard Tank)	Tank / Support	Provides shields and healing buffs but has low defense scaling. Makes early battles much easier and boosts team defense. Best with Magna for stacking effects. Start with Order shields and basic defense modules.
Lucas (4-Star Passion Hunter DPS)	Damage Dealer	Deals area attacks while stacking bullets and applying Marks or Weakness. Very reliable for AoE damage and supports Passion setups. Best with Luke for bullet synergy. Build with Bullet modules and medium-cost Echoes.
Luke (5-Star Order Hunter DPS)	Damage Dealer	Focuses on single-target critical hits while generating bullets. Has strong endgame power but depends on luck. Best with Lucas and Mika. Use Crit-focused Order modules and Bullet Echoes.
Owen (4-Star Passion Striker DPS)	Damage Dealer	Can attack both single and multiple enemies while depending on shields. A simple and useful choice for free players. Best with any tank. Build with medium-cost Passion modules and basic Echoes.

Quick Reroll Guide: How to Start Strong

Rerolling for the top from this Chaos Zero Nightmare character tier list  takes some time since the tutorial can’t be skipped (expect about 20–30 minutes per run), but it’s still worth it to grab a powerful S-tier unit. Here’s how to do it efficiently:

1. Launch the game and play through the prologue and Chapter 1-2 (Eye of the Storm).
2. After that, claim all your rewards from mail, pre-registration bonuses, and achievements. This should give you about 50+ free summons on the Normal Combatant Rescue banner.

3. Use your pulls until you get a 5-star character. The New Account banner guarantees at least one high-rarity unit, so focus there first.
4. Didn’t get the one you want? Go to Settings > Account > Reset Server (or delete your guest account) and start again. Once you get your desired characters, bind your account to Google or Apple for safety.

Best Characters to Reroll For

If you’re aiming for the best possible start from the Chaos Zero Nightmare tier list, these are the top characters to prioritize:

• Khalipe – The best all-around tank and defender. Great sustain, reliable in all modes.
• Mei Lin – The top burst DPS. Deals massive single-target damage and clears story bosses easily.
• Mika – A strong 4-star support who heals and buffs consistently. Perfect if you lack sustain early on.

If you pull any one or two S-tier characters or a balanced trio (tank + DPS + support), you can stop rerolling. The game provides enough free materials for steady progression without endless resets. For players who like keeping track of their pulls or want to simulate odds faster, Enjoygm’s Chaos Zero Nightmare top ups with crystals can help automate the process and save time during rerolls.

Conclusion

And that is all for the Chaos Zero Nightmare tier list. This Chaos Zero Nightmare character tier list arms you for Chaos Zero Nightmare’s global grind S-tiers like Khalipe and Mika form unbreakable cores, while A-tiers add flex without F2P pain. Experiment in practice modes, as kits evolve with updates. Got a god-roll pull?  Then it is time to dominate.