Last Z Heroes: Season 4 Picks and Who to Upgrade First

Hero Guide • Base Heroes and Seasons 1–4 • Last Z Guides

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Quick Answer

Season 4 upgrade priorities: start with your existing faction: Queenie for Wings of Dawn, Yu Chan for Blood Rose, or Amber for Guard of Order. Build their supporting pair before replacing a developed main hero with a low-star newcomer.

For new players, focus on Wings of Dawn. Blood Rose heroes become available earlier, so most inexperienced players build around them. Wings of Dawn counters Blood Rose, giving you an advantage against those teams when development is otherwise comparable. Concentrate your main combat investment on one faction; switching later is expensive.

Earlier in the game, keep combat EXP and gear concentrated on one main formation, while upgrading useful account skills such as Sophia’s construction bonus and Amelia’s research bonus. A hero can be worth skill books without earning a combat slot.

Your factionSeason 4 damage heroS2–S3 pair to build aroundMatching troops
Wings of DawnQueenieAlma + LilianaShooters
Blood RoseYu ChanBella + LiciaAssaulters
Guard of OrderAmberHarleyena + DodemekiRiders

These are faction investment routes, not a ranking of the three factions. Star levels, active talents, equipment, and the opponents you face decide which route pays off on your account.

Season 4: which hero fits your roster?

Queenie fits an established Wings of Dawn team. Her third skill increases her own skill damage; Crimson Dominion extends that effect to Wings of Dawn heroes in the formation. Alma and Liliana provide a useful foundation for this team. See Queenie’s skills.

Yu Chan fills the same investment role for Blood Rose. His self skill-damage bonus extends to Blood Rose heroes through Dragon’s Bane. Keep Bella and Licia together when using their paired talent. See Yu Chan’s skills.

Amber is the Season 4 damage option for Guard of Order. Her talent spreads her self skill-damage effect to Guard of Order heroes in the formation. Harleyena and Dodemeki are the corresponding seasonal pair.

For a full Wings of Dawn candidate, compare Queenie, Alma, Liliana, Nyx, and Scarlett against your current five. It combines the S4 damage hero, the S2–S3 pair, and two S1 heroes. It is a roster to work toward or test—not a reason to replace stronger, developed heroes immediately.

Already have a developed Blood Rose or Guard of Order team? Keep building it rather than replacing it with underdeveloped Wings of Dawn heroes solely for the counter advantage.

Early heroes worth upgrading outside your main five

Choose the bonus that addresses your current bottleneck. These account benefits are a separate reason to develop a hero from their combat performance.

HeroUseful account benefitWhat to prioritize
SophiaConstruction time and free construction timeHer construction skill when building upgrades are slowing you down
AmeliaResearch time and free research timeHer research skill; distinguish basic-resource savings from badge costs
KatrinaFuel supply, including a 100-fuel daily benefit when the relevant skill is fully developedHer fuel skill if fuel limits your daily activities
LauraRadar-related rewards and progression benefitsHer radar skill when radar tasks are a regular part of your routine
MiaVehicle-development materials and bonusesHer vehicle skill when vehicle progress is the bottleneck
ChinatsuAlliance Duel point bonusesHer Duel-related skill before investing solely for a combat slot

The third skill unlocks at hero level 30. Level an off-team hero far enough to access the account skill you need; you do not have to give that hero your best combat equipment.

Purple and blue heroes also have uses beyond filling an empty slot:

For an early combat team, use developed heroes you can equip and support. Replacing a built purple hero with a newly recruited orange hero is not automatically an upgrade.

Which heroes arrive in each season?

The three factions each receive seasonal heroes. Faction and season are not interchangeable: Wings of Dawn is not “the Season 2 faction,” and Guard of Order is not “the Season 3 faction.”

Release groupBlood RoseWings of DawnGuard of OrderMain reason to compare them
S1: training and faction-capacity heroesOliveiraScarlettEvelynTraining utility and faction-dependent talents
S1: troop-damage heroesSelenaNyxSakuraCombat skills and troop-damage talents
S2BellaAlmaHarleyenaDefensive support, troop HP, and the future S3 pair
S3LiciaLilianaDodemekiCapacity and a talent tied to the named S2 partner
S4Yu ChanQueenieAmberSkill damage and benefits for their faction in the formation

Season access does not mean every hero is already in your recruitment pool. Check the current pool before spending tickets; use the hero recruitment guide for that decision.

S2–S3 pairs: what makes them useful?

The relevant pairs are Bella + Licia, Alma + Liliana, and Harleyena + Dodemeki. The S3 hero’s paired talent is the key: a faction-matched S2 hero is not interchangeable with any other hero of that season.

PairTalent to check on the S3 hero
Bella + LiciaFeline Veil
Alma + LilianaSiren Scales
Harleyena + DodemekiOmni-Gaze

These talents provide damage resistance with the named partner. Their 5★ effect extends the resistance benefit across troop types and adds troop capacity. If your planned mixed team depends on that extension, a lower-star copy does not provide the same setup.

Do not count “two seasonal heroes” as an active pair. Open the S3 talent, check its star requirement, and keep its named partner in the formation.

Five of one faction or a 3+2 team?

Use a developed five-hero faction team as a comparison point. It can activate both the formation’s faction bonus and hero talents that specifically require five heroes of that faction.

A 3+2 team becomes worth testing when it preserves useful seasonal pairs or adds a developed hero whose contribution outweighs the bonuses you lose. The number pattern alone gives no special S2–S3 synergy.

Before changing the lineup, check:

  1. Pair activation: are the named S2 and S3 partners both present, with the required talent unlocked?
  2. Troop scope: does the talent affect your actual troop type at its current star level?
  3. Lost effects: which five-faction bonuses stop working when you remove the fifth hero?
  4. Replacement cost: can you bring the new hero’s level, skills, and equipment close enough for a fair comparison?

Then compare battle reports in the same mode against comparable opposition. Keep troop tier, troop count, equipment, and temporary buffs as consistent as possible. Look at the outcome, damage, and wounded troops as well as displayed power. A larger power number does not establish a stronger battle lineup.

For positioning, an early starting layout is two defense heroes in front and three damage heroes behind. Later seasonal combinations may depart from that template; check actual roles and survival rather than forcing every roster into it. See formation choices and what changes formation power.

How many fragments and skill books should you budget?

For an already recruited hero, the full-star promotion costs are:

PromotionFragments for this promotionTotal from 0★
0★ → 1★2525
1★ → 2★5075
2★ → 3★100175
3★ → 4★300475
4★ → 5★500975

The final star costs 500 fragments—more than reaching 4★ from 0★. Decide whether your next investment needs the 4★ talent unlock or a specific 5★ effect before spending universal fragments. Recruitment itself is separate from this promotion budget.

The fourth skill/talent requires hero level 50 and 4★. It develops through star milestones rather than the skill-book upgrades used by skills 1–3.

For an orange hero, raising one book-upgraded skill from level 1 to 30 costs 9,900 orange skill books; all three cost 29,700.

Target skill levelsBooks per level gainedBooks for this range
2–5100400
6–102001,000
11–153001,500
16–204002,000
21–305005,000

Do not use one upgrade order for every hero. On an off-team utility hero, buy the account benefit you need. On a combat hero, check what each skill improves and whether a talent extends it to teammates. A self-only bonus and a formation-wide bonus are different investments.

Recycling blue skill books

The Recycle button becomes available only after every B-rank hero has all skills maxed. You can then recycle leftover blue skill books into reward chests.

Use this to clear surplus books after finishing those skills. Treat rare rewards as a bonus, not a reliable source of hero fragments or Diamonds.

RewardAmountChance
Food1,00024.98%
Wood1,00024.98%
Electricity1,00024.98%
Zents60024.98%
S-rank Universal Hero Fragment10.05%
Diamonds1,0000.03%
View reward probabilities
Blue skill book reward amounts and drop probabilities
Reward amounts and drop probabilities.

Replacing a main hero without losing useful upgrades

If a Hero Level Swapper is available to your account, use its preview before confirming. It can transfer level/EXP and skill development; it does not transfer star rank. The incoming hero needs its own fragments and talent milestones.

Before the swap:

  1. Check the incoming hero’s stars and whether the talent your lineup needs is already available.
  2. Reserve books and EXP if the outgoing hero has an account skill you still want. Swapping away Sophia’s development, for example, can leave her construction skill needing to be unlocked and rebuilt.
  3. Read the transfer preview for level limits and any returned resources.

After the swap, move equipment to the intended hero, update the actual march and saved Arena lineup, then compare results. Changing the hero screen alone is not enough if your saved formation still uses the old setup.

Recruiting a hero is different from unlocking exclusive equipment

Before saving or buying for a hero, distinguish three targets:

A generic upgrade material does not establish that you can unlock the equipment for free. Check the item description and current offer before spending. There is no single 90-day guarantee covering every hero, nor a universal promise of free exclusive equipment at the start of the next season.

Use the equipment guide for equipment spending priorities. For the research route that increases hero troop capacity, see Hero Training costs and Cockpit.

Frequently Asked Questions

Does “all troops” mean a hero can stay outside the formation?

Not by itself. “All troops” can describe which troop types receive a bonus. Deployment is a separate condition. Read both the skill’s scope and its activation text before removing the hero from a team.

Do I need to deploy Nyx, Selena, or Sakura for their fourth-skill troop-damage bonus?

Their unlocked fourth-skill troop-damage talent applies without deploying them. Their deployment-dependent combat skills still need them in the formation. Owning the passive bonus and choosing a combat slot are separate decisions.

Should I open hero EXP chests immediately?

Check whether the chest’s reward scales with HQ level. If it does, waiting can increase the EXP received. Open what you need when a hero level unlocks a useful skill or solves a current progression block; saving every chest also has a cost if it stalls progress.