Robin is a Physical support character from The Harmony. She increases all allies’ ATK, scaling based on her ATK, and CRIT DMG. While in Concerto state, her ultimate, she becomes unable to act, but becomes immune to Crowd Control and advances all allies’ actions, besides dealing additional Physical damage to enemies after every ally attack. Robin regenerates energy after allies’ attacks and, using her technique, at the start of each wave. This helps to ensure a consistent use of her ultimate.
Moveset
The numbers below consider the character to be at max traces without Eidolons.
Basic ATK – Wingflip White Noise | Single Target: Deals Physical DMG equal to 100% of Robin’s ATK to a single target enemy.
Skill – Pinion’s Aria | Support: Increase DMG dealt by all allies by 50%, lasting for 3 turn(s). This duration decreases by 1 at the start of Robin’s every turn.
The 3-turn duration should be enough to use the ultimate multiple times with 1 skill activation in some cases. A good build should allow a consistent Skill > Basic > Basic > Ult.
Talent – Tonal Resonance | Support: Increase all allies’ CRIT DMG by 20%. Moreover, after allies attack enemy targets, Robin additionally regenerates 2 Energy for herself.
This talent makes Robin especially good on teams with follow-up attacks since the more attacks, the easier it is to reach her ultimate.
Ultimate – Vox Harmonique, Opus Cosmique | Support | 160 energy cost: Robin enters the Concerto state and makes all other allies immediately take action.
When in the Concerto state, increase all allies’ ATK by 22.8% of Robin’s ATK plus 200. Moreover, after every attack by allies, Robin deals Additional Physical DMG equal to 120% of her ATK 1 time, with a fixed CRIT Rate for this damage set at 100% and fixed CRIT DMG set at 150%.
When in the Concerto state, Robin is immune to Crowd Control debuffs, and cannot enter her turn or take action until Concerto state ends.
A Concerto countdown appears on the Action Order bar. When the countdown’s turn begins, Robin exits the Concerto state and immediately takes action. The countdown has its own fixed SPD of 90.
The main point of Robin`s kit. You usually want to use Concerto after your allies finish acting since it advances their actions. While in Concerto, Robin doesn’t act until it ends. That means her skill turn countdown will not go down while her ultimate is active, allowing for multiple ultimate usages with a single skill activation if wanted. In most battles, when changing waves, the Action Order is reset, which means that Concerto will go back to the beginning of the Action Order allowing for prolonged use. Since Robin wants to be in Concerto as much as possible and has a considerable energy cost, the best position for her is in the middle of the team, specifically next to your sustain character if they have a way to attract attacks, such as Gepard’s Light Cone effects, which increases the chance of the wearer being attacked. This way, AOE attacks will also hit Robin, regenerating more energy.
Technique – Overture of Inebriation | Support: After using Technique, creates a dimension around the character that lasts for 15 seconds. Enemies within this dimension will not attack Robin and will follow Robin while the dimension is active. After entering battle while the dimension is active, Robin regenerates 5 Energy at the start of each wave. Only 1 dimension created by allies can exist at the same time.
While testing, I didn`t see usage for the enemies following Robin part, however, the 5 energy at the start of each wave is nice, another way to help reach Concerto. The only other characters with a dimension as their technique are Welt and Himeko, not present in Robin’s best teams, but I would prioritize Robin’s dimension anyway.
Major Traces
A2 – Coloratura Cadenza: When the battle begins, this character’s action is Advanced Forward by 25%.
This major trace is extremely important. It allows you to run ATK% boots on Robin for better support on all of her skills and she will still be the first to act on the fight, allowing for a skill usage before the ultimate. I tested a 105 SPD Robin with ATK% boots and she was always my first character to act. However, you will need 120 SPD to get access to the full Planar Ornament Buffs.
A4 – Impromptu Flourish: While the Concerto state is active, the CRIT DMG dealt when all allies launch follow-up attacks increases by 25%.
This trace locks her full potential on a follow-up team, which is the team that synergizes with her the best, however limiting mechanics are not great, but most characters in Honkai: Star Rail have mechanics like this. That being said, the rest of her kit compensates the 25% CIRT DMG you will lose for running her on other teams.
A6 – Sequential Passage: When using Skill, additionally regenerates 5 Energy.
A simple trace to reach the ultimate faster.
Eidolons
E1 – Land of Smiles: While the Concerto state is active, all allies’ All-Type RES PEN increases by 24%
This Eidolon makes all allies do more elemental damage. It’s an extremely high percentage. For comparison, Ruan Mei’s ultimate, at LvL 12, gives 27% All-Type RES PEN. A very good Eidolon.
E2 – Afternoon Tea For Two: While the Concerto state is active, all allies’ SPD increases by 16%. The Talent’s Energy Regeneration effect additionally increases by 1.
Another great Eidolon. More SPD for allies means more actions during Concerto, which converts to more damage and more energy for Robin. Also, it increases her talent’s energy regeneration from allies’ attacks by one, increasing even more this Eidolon value.
E3 – Inverted Tuning: Skill Lv. +2, up to a maximum of Lv. 15. Ultimate Lv. +2, up to a maximum of Lv. 15.
E4 – Raindrop Key: When using the Ultimate, dispels Crowd Control debuffs from all allies. While Robin is in the Concerto state, increases the Effect RES of all allies by 50%.
One more to the list. While testing, I found myself in situations where I wished Robin could dispel Crowd Control debuffs, and there it is. Also, the 50% Effect RES fits perfectly with Aventurine, the best sustain unit to be used with her, and also gives 50% Effect RES through his talent.
E5 – Lonestar’s Lament: Basic ATK Lv. +1, up to a maximum of Lv. 10. Talent Lv. +2, up to a maximum of Lv. 15.
E6 – Moonless Midnight: While the Concerto state is active, the CRIT DMG of the Additional Physical DMG caused by the Ultimate increases by 450%. The effect of Moonless Midnight can trigger up to 8 time(s). And the trigger count resets each time the Ultimate is used.
To wrap it up, another incredible Eidolon. The Physical damage dealt by Robin’s ultimate is 120%. This Eidolon increases the additional Physical damage by 450%. That means the damage will now be 570%. Almost 5 times the normal damage up to 8 times for ultimate.
Light Cones
| Flowing Nightglow | The Harmony |
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| Every time any ally attacks, the wearer gains 1 stack of Cantillation. Each stack of Cantillation increases the wearer’s Energy Regeneration Rate by 3/3.5/4/4.5/5%, stacking up to 5 times. When the wearer uses their Ultimate, removes Cantillation and gains Cadenza. Cadenza increases the Wearer’s ATK by 48/60/72/84/96% and all allies’ DMG dealt by 24/28/32/36/40%, lasting for 1 turn(s). |
Robin’s Signature Ligh Cone and her best option, giving energy restoration and increasing ATK and allied DMG upon using the ultimate, besides having an above-average ATK stat.
| But the Battle Isn’t Over | The Harmony |
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| Increases the wearer’s Energy Regeneration Rate by 10/12/14/16/18% and regenerates 1 Skill Point when the wearer casts their Ultimate on an ally. This effect can be triggered after every 2 uses of the wearer’s Ultimate. When the wearer uses their Skill, the next ally taking action (except the wearer) deals 30/35/40/45/50% more DMG for 1 turn(s). |
Bronya’s Signature Light Cone. Provides more energy restoration and 1 skill point when using the ultimate. However, it doesn’t give any ATK and only buffs the next ally after using the skill. Besides, it gives less ATK and more HP in terms of stats.
| For Tomorrow’s Journey | The Harmony |
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| Increases the wearer’s ATK by 16/20/24/28/32%. After the wearer uses their Ultimate, increases their DMG dealt by 18/21/24/27/30%, lasting for 1 turn. |
Offers overall considerably less damage than Robin’s Signature and no energy restoration, however, it’s a viable F2P option, providing ATK, teamwide buffs, and ATK stat comparable to Bronya’s Signature.
| Carve the Moon, Weave the Clouds | The Harmony |
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| At the start of the battle and whenever the wearer’s turn begins, one of the following effects is applied randomly: All allies’ ATK increases by 10/12.5/15/17.5/20%, all allies’ CRIT DMG increases by 12/15/18/21/24%, or all allies’ Energy Regeneration Rate increases by 6/7.5/9/10.5/12%. The applied effect cannot be identical to the last effect applied, and will replace the previous effect. The applied effect will be removed when the wearer has been knocked down. Effects of the similar type cannot be stacked. |
One of the last case scenario options. It has potential, giving energy restoration, ATK, and CRIT DMG to the team, however, the fact that it’s RNG-based makes it unreliable. However, all three stats can be good in the correct situation for Robin and her team.
| Meshing Cogs | The Harmony |
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| After the wearer uses attacks or gets hit, additionally regenerates 4/5/6/7/8 Energy. This effect can only be triggered 1 time per turn. |
A more reliable option than Carve the Moon, Weave the Clouds, generating energy every time Robin attacks and gets hit, however, being a 3-star Ligh Cone, it provides fewer base stats.
Relics
| Champion of Streetwise Boxing |
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| 2-Piece Effect | Increases Physical DMG by 10%. |
| 4-Piece Effect | After the wearer attacks or is hit, their ATK increases by 5% for the rest of the battle. This effect can stack up to 5 time(s). |
The best set for Robin when fully stacked. It gives 25% ATK and 10% Physical Damage, surpassing all other options. However, you need to either, attack or get hit 5 times with Robin. Now, in a good run, you will attack little with her, which leaves us with getting hit. Depending on who you are fighting against that can be easier or harder. From my testing, it seems harder than it actually is. I tested it on MoC and got the 5 stacks easily every time, it’s just a matter of positioning your Robin correctly.
| Musketeer of Wild Wheat + Prisoner in Deep Confinement |
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| Musketeer of Wild Wheat 2-Piece Effect | ATK increases by 12%. |
| Prisoner in Deep Confinement 2-Piece Effect | Increases ATK by 12%. |
24% ATK increase. Great overall for Robin’s scaling.
| Musketeer of Wild Wheat |
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| 2-Piece Effect | ATK increases by 12%. |
| 4-Piece Effect | The wearer’s SPD increases by 6% and Basic ATK DMG increases by 10%. |
An option if you want to run ATK% boots and your Robin is not acting first or not reaching 120 SPD for the Planar Ornament buffs, or if you want a higher speed Robin.
| Musketeer of Wild Wheat + Messenger Traversing Hackerspace |
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| Musketeer of Wild Wheat 2-Piece Effect | ATK increases by 12%. |
| Messenger Traversing Hackerspace 2-Piece Effect | Increases SPD by 6%. |
Gives basically the same as a full Musketeer of Wild Wheat, but this option can be used if you have better substats.
Planar Ornaments
| Space Sealing Station |
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| Increases the wearer’s ATK by 12%. When the wearer’s SPD reaches 120 or higher, the wearer’s ATK increases by an extra 12%. |
A pure offensive option, providing 24% extra ATK. Though You will have to use SPD% boots or be lucky on your substats.
| Fleet of the Ageless |
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| Increases the wearer’s Max HP by 12%. When the wearer’s SPD reaches 120 or higher, all allies’ ATK increases by 8%. |
A more defensive option that gives a teamwide buff. The SPD% boots also apply.
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| Increases wearer’s Energy Regeneration Rate by 5%. Increases DMG for all other allies with the same DMG Type as the wearer by 10%. |
A niche option. Gives energy regeneration, however, it buffs only Physical DMG allies which are not very common, especially not in Robin’s best teams.
| Firmament Frontline: Glamoth |
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| Increases the wearer’s ATK by 12%. When the wearer’s SPD is equal to or higher than 135/160, the wearer deals 12%/18% more DMG. |
The set that gives the most damage. However, I find it quite difficult to reach such high speeds and Robin doesn’t need to be so fast.
| Broken Keel |
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| Increases the wearer’s Effect RES by 10%. When the wearer’s Effect RES is at 30% or higher, all allies’ CRIT DMG increases by 10%. |
The worst option. I would only use this if I had Robin’s E4, which gives 50% Effect RES upon casting the ultimate, so you don’t need to build her around that. However, if you have her at such a high Eidolon I would try to get something better.
Relic Stats
As for the relic stats, you will want an ATK% body, ATK%/Physical DMG Planar Sphere, and an Energy Regen Link Rope. For boots, if you have 120 SPD without boots, the best option is to go ATK%, else go SPD%. This is because all of her best Planar Ornaments require 120 SPD. The substats you are looking for are ATK% > SPD > HP% = DEF%.
Teams
| Follow-up attack team |
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| Robin’s best team. Here, she will see easier ult activations and the most Concerto damage, thanks to all allies performing follow-up attacks. Besides, this team is very tanky, since Aventurine’s follow-up is reached easily, shielding the whole team and allowing Robin to safely take hits. |
| DOT team |
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| Robin can replace Ruan Mei on the DOT team, utilizing HuoHuo’s energy regeneration and Kafka’s follow-up attacks. Unfortunately, I don’t have a DOT team to showcase here. |
| Acheron Nihility team |
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| Robin can replace one of the Nihility units on this team, especially if you have Acheron at E2. However, since there are no follow-up attacks, the difference in Concerto damage is noticeable. This is more of an option if you don’t have Silver Wolf or Black Swan for the original team or have Robin at a high Eidolon since she will compensate for some flaws. |
Robin is definitely a top-tier support, one of the pillars of the follow-up team. It’s hard to compare with other top-tier supports since they fulfill different roles, but I find it insane that she has a part of Ruan Mei’s ultimate on her E1. Robin is a good option and worth pulling if you can build a follow-up or DOT team (especially with Kafka and HuoHuo at least). If not, she will perform worse. That does not mean she is bad in other conditions. Support with turn manipulation is always a good mechanic, especially for the whole team, you will just not see her full potential. Robin is not Eidolon dependent. She can perform greatly at E0, however, her kit gets significantly better at E6, so, if you plan to E6 someone, I would consider it, of course, provided you have the teams to utilize her.
