TL;DR
- The tier list ranks Battle and Assist Partners by element and role, emphasizing the meta's favor towards Fire and Light units.
- Criteria for rankings include clear speed against endgame content, versatility in team archetypes, cost efficiency, and kit depth.
- S-tier Battle Partners include Heidi, Jen, and Nina, while S-tier Assist Partners feature Hunter K and Gerbil, highlighting their critical roles in team compositions.
Disclaimer: This summary was created using Artificial Intelligence (AI)
Star Sailors tier list 2026 conversations keep circling the same five names, and after four months of pulling on this Chain Bonus system, we understand why.
Com2uS built a turn-based JRPG where a single missed Break window can wipe an otherwise perfect run, and that pressure is exactly what separates a real S-tier pick from a unit that only looks good on a banner splash page.
So we cover every Battle Partner and Assist Partner worth knowing, ranked by what actually clears endgame content instead of what pulls the most engagement on a thumbnail.
How We Rank this Star Sailor’s Tier List
Our criteria weigh four things: current clear speed against story and endgame content, how well a unit slots into more than one team archetype, how much it costs to get a partner online with low investment, and how much of its power comes from kit depth rather than dupes.
A 2-star unit that performs like a 3-star without needing copies ranks above a 3-star that only works after three or four pulls of the same character.
We also separate what a unit does on paper from what it does when you’re staring down a boss with a hard enrage timer and one SP bar left to work with.
Star Sailors splits its roster into two functional buckets, and the tier list has to respect that split. Battle Partners sit on the front line next to your Adventurer, take damage, and get targeted directly.
Assist Partners sit off-field, buff or debuff from safety, and can’t be hit. Ranking a Battle tank against an Assist debuffer on the same scale misses the point of the system, so we break both lists out separately before talking about how they combine.
See Also: Neverness to Everness Character List: Every Esper Ranked for 1.2
Elements and Roles in Star Sailors
The elemental wheel runs Fire, Water, Earth, Wind, Light, and Dark, layered with Daylight, Midnight, and Twilight tags that shift how certain partners interact within a team.
Roles split into Attacker (DPS), Defender (Tank), Supporter (Buffer/Healer), and Debuffer. Attackers and Defenders are almost always Battle Partners, since they’re built to stand on the field and either deal damage or eat hits. Supporters and Debuffers dominate the Assist slots, where their kits work better without the risk of getting targeted.
Right now the meta leans hard on Fire and Light. Fire gives you the cleanest damage stack in the game through Heidi, Jen, and Carat, three characters who all reinforce each other without needing a fourth piece.
Light does the opposite job well: Kaira, Ethan, and the Assist-side Light units let you run healing and damage out of the same slot, which frees up a team seat for whatever your Earth or Water coverage still needs.
Water, Wind, and Earth aren’t dead elements, but they ask for more specific pairings before they compete with a straight Fire or Light core.
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Best Battle Partner Tier List in Star Sailors by Element & Role
Battle Partners occupy the frontline, take the aggro, and execute your combos. If you are rerolling or spending premium currency, this is where you invest first.
S-tier
- Heidi (Fire, Attacker)
Heidi is the AoE standard the rest of the roster gets measured against. Her kit hits multiple targets on nearly every active skill, and her ultimate pushes her ATK bonus as high as 220 percent while adding crit rate on top.
She clears trash waves fast enough that farming stops feeling like a chore, and she scales cleanly into endgame Fire teams without a ceiling that suddenly appears at Chapter 10.
- Jen (Fire, Defender)
Jen is the tank we keep coming back to. She converts her own defense into team-wide damage reduction, strips enemy buffs, and heals through her ultimate for up to 20 percent of the team’s max HP.
If you’ve ever watched a run collapse because your healer died two turns before the boss did, Jen is the answer. She protects Heidi and Nina at the same time, which is a big part of why the Fire core dominates so many published tier lists.
- Nina (Earth, Attacker)
The premier boss killer. She is the single-target answer to Heidi’s AoE. Her Hook Shot into Checkmate combo does real burst damage, and she self-buffs crit rate as she goes, so a well-set-up Nina turn can end a boss phase outright.
She needs Hunter K in the Assist slot to hit her ceiling, which is the one asterisk on an otherwise clean S-tier pick.
- Carat (Wind, Attacker)
The F2P queen. Carat is the unit that makes Star Sailors feel fair to free players. She’s a lower-rarity pull with a three-hit burst skill that deals roughly 330 percent ATK, and she doesn’t fall off the way most accessible units do once the story ramps up.
If you whiff your Heidi pulls, Carat covers the gap without forcing you to reroll.
- Kaira (Light, Supporter/hybrid)
Kaira solves the problem every gacha team eventually runs into: needing a healer without giving up a damage slot.
She restores HP, buffs ally ATK by up to 15 percent, and her ultimate hits the whole enemy team while topping off the party. She slots into Fire or Light comps equally well.
A-tier
- Erling (Water, Defender)
Erling is a reliable secondary tank once you already have Jen. He shreds enemy resistance and shields the team, but he plays a support role to a primary anchor rather than replacing one outright.
- Ethan (Light, Attacker)
Ethan deals solid single-target damage and shields himself in the process, which makes him a fine early-to-mid Light DPS.
He gets outscaled by premium Light picks later, so treat him as a bridge unit rather than a long-term investment.
B-tier and Below
Rak (Fire, Defender), Soul (Fire, Attacker), Iron (Earth, Defender), and Remi (Earth, Defender) show up constantly in early rewards and starter summons.
They’re functional through the first several chapters, but none of them keep pace once Jen, Heidi, or Erling enter the picture. Soul in particular needs careful HP management to hit his damage thresholds, which is a lot of upkeep for a unit you’re going to replace anyway.
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Best Star Sailors Assist Partner Tier List by Element & Role
Do not neglect your backline. Assist Partners provide the mathematical engine that allows your Battle Partners to hit their damage ceilings. Because they cannot be targeted, they are the safest investments on your account.
S-tier
- Hunter K (Earth, Supporter)
Hunter K is the least flashy S-tier pick in the game and arguably the most important one. He boosts team crit rate, triggers auto-attacks on ally turns, and recovers SP for the whole squad.
Nina does not reach her real damage ceiling without him. Plenty of new players bench Hunter K because his kit reads as generic on paper. Don’t. He’s the engine behind every serious Earth bossing team.
- Gerbil (Light, Debuffer)
Gerbil strips enemy defense from the backline, which is exactly what high-tier bosses demand once their damage reduction starts eating your team’s output.
He also contributes meaningful chip damage from off-field, so he’s not purely a support pick.
- Iris (Light, Attacker/Debuffer hybrid)
Meanwhile, Iris delivers real damage without ever standing in the danger zone. Her Brute Strike scaling rewards crit investment, and because Assist Partners can’t be targeted, she’s a free damage source that never dies mid-fight.
A-tier
Dora (Water, Supporter) is a pure sustain pick, strong in long fights where survival matters more than burst. Jerry (Earth, Supporter) is technically an Assist Partner, not a Battle Partner, despite showing up on the frontline table in a handful of older community guides.
He completes the Nina and Hunter K Earth core with off-field AoE and chain amps, but he’s weak in isolation. Mui (Wind, Supporter) and Simo (Wind, Debuffer) both want a Wind-heavy team, usually built around Carat, to be worth the investment.
Sion (Light, Debuffer) and Nutty (Earth, Debuffer) round out this tier as solid situational picks for players who already have their S-tier core online.
B-tier and Lower
Caroline, Ed (Fire, Supporter), and Nadia (Water, Debuffer) are common early pulls that get replaced the moment you land a better Assist.
Nadia deserves a specific callout: her chain-bonus debuffs are genuinely useful in prolonged boss fights, and a few community rankings have bumped her as high as S-tier for that reason, while others rank her as low as C.
We’re placing her in B-tier as the middle ground, since most cross-referenced sources treat her as a solid niche pick rather than a must-build.
The F2P vs Whale Reality
The honest answer here is that Star Sailors is more forgiving to free players than most turn-based gacha games on the market right now.
Carat is a 2-star unit that stands next to 3-star S-tier picks without embarrassing herself, and Hunter K, Gerbil, and Iris are all Assist Partners you can reasonably farm toward without whale-level summoning budgets.
Where the gap actually shows up is at the Signature Weapon and Memory Piece layer. A maxed Heidi with her best gear set will out-damage a bare A-tier unit every time, but a bare S-tier Battle Partner without any Memory Piece investment can still lose a straight damage race to a properly built A-tier unit with a complete set.
Tier lists rank kit potential, not your specific account, so treat this list as a target list for what to build, not a guarantee of who wins every fight regardless of investment.
Team Building Around this Tier List
The strongest opening move right now is a straight Fire core: Heidi and Jen as your two Battle Partners, Carat as a flex third option if you’re still missing one of them, and Kaira filling the healing gap if you already have both.
Earth offers the highest ceiling in the game through Nina, Hunter K, and Jerry, but only once all three pieces are online, since Nina alone underperforms her reputation.
Light works as a hybrid glue element, letting Kaira, Ethan, and Iris cover healing, damage, and off-field pressure out of fewer slots than a mono-element team would need.
Save your top-tier Memory Pieces for whichever core you commit to first. Spreading investment across three elements at once is the single biggest way new players waste resources in this game.
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This Star Sailors tier list 2026 breakdown will keep shifting as Com2uS ships new banners and balance passes, and anyone telling you a ranking is permanent hasn’t been through a patch cycle yet.
What won’t change soon is the shape of the meta: Fire and Light give you the safest, most flexible path through both story and endgame content, Earth rewards patience with a genuine ceiling once you land the full Nina core, and the rest of the roster exists to fill gaps rather than to headline a team.
Pull for what completes your comp, not just what tops a list, and you’ll clear more content than the player chasing every S-tier name on the banner.
FAQs
The S-tier backline assists are the five names consistently dominating Chain Bonus system discussions after four months of community testing. These units reliably cover Break windows that would otherwise wipe a run.
A broken backline assist consistently exploits Break windows without missing, which is the single most punishing mechanic in the game. Units that can trigger or extend Chain Bonuses reliably are what separate S-tier from the rest of the roster.
The Chain Bonus system rewards precise turn sequencing, meaning assists that feed into or amplify chains dramatically outperform those that do not. Missing a Break window in this system can collapse an entire run, so assists that protect that window are the highest priority.
TL;DR
- The tier list ranks Battle and Assist Partners by element and role, emphasizing the meta's favor towards Fire and Light units.
- Criteria for rankings include clear speed against endgame content, versatility in team archetypes, cost efficiency, and kit depth.
- S-tier Battle Partners include Heidi, Jen, and Nina, while S-tier Assist Partners feature Hunter K and Gerbil, highlighting their critical roles in team compositions.
