Last Z Heroes: Season 4 Picks and Who to Upgrade First
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 faction | Season 4 damage hero | S2–S3 pair to build around | Matching troops |
|---|---|---|---|
| Wings of Dawn | Queenie | Alma + Liliana | Shooters |
| Blood Rose | Yu Chan | Bella + Licia | Assaulters |
| Guard of Order | Amber | Harleyena + Dodemeki | Riders |
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.
| Hero | Useful account benefit | What to prioritize |
|---|---|---|
| Sophia | Construction time and free construction time | Her construction skill when building upgrades are slowing you down |
| Amelia | Research time and free research time | Her research skill; distinguish basic-resource savings from badge costs |
| Katrina | Fuel supply, including a 100-fuel daily benefit when the relevant skill is fully developed | Her fuel skill if fuel limits your daily activities |
| Laura | Radar-related rewards and progression benefits | Her radar skill when radar tasks are a regular part of your routine |
| Mia | Vehicle-development materials and bonuses | Her vehicle skill when vehicle progress is the bottleneck |
| Chinatsu | Alliance Duel point bonuses | Her 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:
- Vivian: her fuel-saving talent gains an effect at 5★ that works without putting her in the formation. Before that milestone, check the deployment condition.
- Maria, Angelina, William, and Audrey: check their troop-training skills before dismissing them because of rarity.
- Christina: demolition utility is a reason to consider her for attacking cities, not a general claim that she improves every battle formation.
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 group | Blood Rose | Wings of Dawn | Guard of Order | Main reason to compare them |
|---|---|---|---|---|
| S1: training and faction-capacity heroes | Oliveira | Scarlett | Evelyn | Training utility and faction-dependent talents |
| S1: troop-damage heroes | Selena | Nyx | Sakura | Combat skills and troop-damage talents |
| S2 | Bella | Alma | Harleyena | Defensive support, troop HP, and the future S3 pair |
| S3 | Licia | Liliana | Dodemeki | Capacity and a talent tied to the named S2 partner |
| S4 | Yu Chan | Queenie | Amber | Skill 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.
| Pair | Talent to check on the S3 hero |
|---|---|
| Bella + Licia | Feline Veil |
| Alma + Liliana | Siren Scales |
| Harleyena + Dodemeki | Omni-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:
- Pair activation: are the named S2 and S3 partners both present, with the required talent unlocked?
- Troop scope: does the talent affect your actual troop type at its current star level?
- Lost effects: which five-faction bonuses stop working when you remove the fifth hero?
- 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:
| Promotion | Fragments for this promotion | Total from 0★ |
|---|---|---|
| 0★ → 1★ | 25 | 25 |
| 1★ → 2★ | 50 | 75 |
| 2★ → 3★ | 100 | 175 |
| 3★ → 4★ | 300 | 475 |
| 4★ → 5★ | 500 | 975 |
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 levels | Books per level gained | Books for this range |
|---|---|---|
| 2–5 | 100 | 400 |
| 6–10 | 200 | 1,000 |
| 11–15 | 300 | 1,500 |
| 16–20 | 400 | 2,000 |
| 21–30 | 500 | 5,000 |
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.
| Reward | Amount | Chance |
|---|---|---|
| Food | 1,000 | 24.98% |
| Wood | 1,000 | 24.98% |
| Electricity | 1,000 | 24.98% |
| Zents | 600 | 24.98% |
| S-rank Universal Hero Fragment | 1 | 0.05% |
| Diamonds | 1,000 | 0.03% |
View reward 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:
- Check the incoming hero’s stars and whether the talent your lineup needs is already available.
- 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.
- 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:
- Recruitment: acquiring the hero and further fragments from the pool or event that currently offers them.
- Exclusive-equipment unlock: obtaining the specific material needed to open that hero’s equipment slot or item.
- Exclusive-equipment upgrades: raising equipment you have already unlocked.
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.