Cosmo is the newest Brawler in Brawl Stars — a Mythic ranged controller who fires projectiles that orbit outward and a Super that turns one enemy into a magnet for your whole team's fire. He headlines Season 54 "Royal Academy" and, per Supercell's own reveal, arrives in-game the week of September 8, 2026 with a free early-access event. This guide covers his full kit, the best Star Power and Gadget, an early build recommendation, which modes he shines in, and exactly how to unlock him — all cross-checked against the latest official reveal and pre-release data.
Quick answer (TLDR): Cosmo is a Mythic ranged Brawler (#107) releasing in September 2026 with Season 54. His attack "Orbit" fires three projectiles that spread apart and grow larger and stronger the farther they travel, and his Super "Gravitational Pull" attaches a magnet to an enemy so all of Cosmo's and his teammates' shots curve toward that target. Best all-around Gadget = Planetary Pushback (knockback to survive dives); best Star Power = Precession (+25% orbit speed for consistent hits), with Ammo Attractor for team-heavy comps. He's strongest in coordinated 3v3 modes (Gem Grab, Brawl Ball, Hot Zone, Knockout) and weak in solo Showdown. Unlock him after his release event via Brawler Blast for 1,900 Mythic Credits — there is no code for Brawlers. Because he's brand-new, treat all numbers as pre-release; Supercell often tweaks a Brawler in the first balance patch.
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Who is Cosmo in Brawl Stars?
Cosmo is the lead astronomer at Starr Park's Observatory — a robot scientist who lectures about the universe and, in the Royal Academy season, brings that "gravity and orbits" theme straight into his kit. Supercell classifies him as a Mythic Brawler with a ranged / controller-utility role.
| Detail | Cosmo |
|---|---|
| Rarity | Mythic |
| Role | Ranged / Controller (utility) |
| Number | #107 |
| Prestige 1 Title | "Out of this World" |
| Prestige 3 Title | "Stargazer" |
| Release | September 2026 (Season 54 "Royal Academy") |
| Unlock cost | 1,900 Mythic Credits (via Brawler Blast) |
His whole identity is controlling where shots go rather than firing in straight lines. That makes him a setup Brawler: he creates awkward attack angles for himself and, with his Super, funnels an entire team's damage onto one target. If you like Brawlers that reward positioning and prediction over raw aim, Cosmo is built for you.
"Cosmo, the host of the Starr Park Observatory, arrives next week!" — @BrawlStars, official reveal post (September 2026)
How does Cosmo's attack "Orbit" work?
Cosmo's main attack, Orbit, fires three projectiles that travel around him in an expanding circular pattern. This is the mechanic that makes him unusual: the longer the projectiles travel, the farther apart they spread and the bigger they get — and the more damage they deal.
That gives Cosmo a distance-based damage curve most Brawlers don't have:
- Close range: smaller projectiles, tighter grouping, easier to control but lower payoff.
- Mid range: the projectiles begin fanning out, making them much harder to dodge.
- Long range: the projectiles are at their largest and hit hardest — but you have to read where the enemy will be.
The skill ceiling here is real. Cosmo is not a straight-line spammer like Colt or Brock. You're leading targets and using the orbit spread to catch enemies who try to strafe. Auto-aim will land the easy shots, but the players who learn the projectile arc will squeeze far more damage out of him at range.
What does Cosmo's Super "Gravitational Pull" do?
Cosmo's Super, Gravitational Pull, is the reason he'll matter in competitive play. He launches a magnet that latches onto an enemy Brawler. Once attached, incoming projectiles from Cosmo and his teammates are pulled toward that target.
In plain terms: Cosmo marks one enemy and makes them extremely easy for your whole team to hit. It's less about burst damage and more about setting up kills. Mark the enemy carry or the Brawler trying to escape with the objective, and suddenly every ranged shot on your team becomes a guided missile.
That's why his ceiling scales with your team. On a comp stacked with ranged Brawlers, Gravitational Pull can chain-delete a priority target the moment it's revealed. Reddit's early reactions compared the "guaranteed-hit setup" feel to Gene's hook — a Super that, with teammates, nearly promises a pick. In uncoordinated solo queue it's noticeably weaker, because you're relying on randoms to actually shoot the marked enemy.
Best Gadget for Cosmo
Pre-release data lists two Gadgets for Cosmo. Final numbers may shift, but the design intent is clear.
Planetary Pushback (recommended default)
Planetary Pushback knocks back enemies in a selected area (roughly a 14-second cooldown). This is the safer all-around pick because Cosmo's single biggest weakness is being pressured up close — a controller with a spread-out attack is exposed the moment an assassin closes the gap. A well-timed knockback:
- Interrupts an Assassin (Mortis, Edgar, Nori) trying to dive you.
- Buys space to reset your positioning while holding a lane.
- Peels an enemy off your team's objective in Hot Zone or Brawl Ball.
For general 3v3 play, take this.
Telescope Trap (situational)
Telescope Trap reveals visibility in an area for 6 seconds and blocks dashes, jumps, and teleports (roughly a 20-second cooldown). This is a specialist tool: it shuts down mobility Brawlers and hard-counters bush camping in modes like Bounty or bushy Gem Grab maps. If your lobby is full of dash Brawlers or the map is bush-heavy, Telescope Trap swings games — but it's map- and matchup-dependent, so keep Planetary Pushback as your everyday Gadget.
Best Star Power for Cosmo
Cosmo's two Star Powers are both passives, and the "best" one depends on how coordinated your play is.
Precession (recommended for solo/ladder)
Precession increases the orbit speed of Cosmo's main attack by 25%. Faster projectiles means less lead time, more consistent hits at mid-to-long range, and far fewer whiffs against strafing enemies. For laddering and solo queue — where you can't count on teammates to capitalize on your Super — the reliability of just hitting your shots more often wins out. This is the safe default.
Ammo Attractor (recommended for team play)
Ammo Attractor reloads 2 ammo when you hit an enemy with your Super. In a coordinated team where Gravitational Pull connects consistently, this keeps Cosmo's damage output relentless — land the magnet, dump your attacks, and immediately reload two-thirds of your bar. On a 3-stack or in Ranked with a shot-caller, Ammo Attractor is the higher-ceiling pick. In random solo queue where your Super is harder to convert, it's the weaker of the two.
Rule of thumb: solo/ladder → Precession; premade/Ranked → Ammo Attractor.
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Best Cosmo build (early recommendation)
Until he's live and the meta settles, here's the safest starting loadout for climbing:
- Gadget: Planetary Pushback
- Star Power: Precession (Ammo Attractor if you play in a premade)
- Gears: Damage (+15% when below 50% HP) and Speed (+bush movement) — both are cheap universal Super Rare Gears that suit a squishy controller who needs to reposition. Add a Shield or Health Gear if you keep getting collapsed on.
Because Cosmo is fragile and reliant on positioning, prioritize Gears and abilities that keep him alive and moving over pure aggression. For a full breakdown of which Gears are worth your Coins right now, see our Brawl Stars Gears guide.
Best game modes for Cosmo
Cosmo is a coordinated-objective Brawler, not a lone-wolf pick. His Super is dead weight without teammates to exploit it.
- Gem Grab ✅ — mark the enemy gem carrier and let your team melt them; control angles around the mine.
- Brawl Ball ✅ — Gravitational Pull on the ball carrier turns a defensive stop into a guaranteed pick.
- Hot Zone ✅ — area-denial attack plus a magnet to punish anyone contesting the zone.
- Knockout ✅ — one marked enemy dying early wins the round; his Super is a round-ender here.
- Bounty ⚠️ — workable with Telescope Trap and long-range Orbit, but he's outranged by dedicated snipers.
- Showdown ❌ — weak. His Super needs allies, and solo he's a squishy target with no reliable escape.
For where Cosmo will slot into the broader meta once he drops, cross-reference our live Brawl Stars tier list (September 2026) — new Brawlers usually launch novelty-inflated, so his real ranking will settle after the first balance pass.
How to unlock Cosmo in Brawl Stars
Two paths, in order:
- Cosmo Release Event (free, limited time). Like recent Brawlers, Cosmo arrives with a free early-access event when he goes live in September. Complete the event objectives (win matches / open the event boxes) to unlock him early at no cost. The exact start date and box count weren't officially pinned at reveal — check in-game once the event goes live.
- Brawler Blast (after the event). Once the event ends, Cosmo joins the standard unlock pool. As a Mythic, he costs 1,900 Mythic Credits through Brawler Blast — the shooting-gallery system that replaced Starr Road on September 1. Note that Brawler Blast unlocks a random Brawler from the rarity you're on, so it may take multiple Mythic openings before Cosmo is the one you get.
There is no QR code or promo code for Brawlers — codes only grant cosmetics and currency. Anyone claiming a "free Cosmo code" or a "free gem generator" is running a scam; unlock Brawlers only through the event or Brawler Blast. (For the codes that are real, see our Brawl Stars codes (September 2026) list.)
Is Cosmo worth unlocking?
For most players: yes, but he's a want-not-a-need. Cosmo is a genuinely fresh, high-skill controller with one of the more interesting Supers in the game, and Mythic Brawlers tend to hold value in the meta. But he's team-reliant, squishy, and demands positioning discipline — if you mostly play solo Showdown or want an easy carry, your Credits are better spent elsewhere first. If you play 3v3 modes with friends or grind Ranked, Cosmo's Gravitational Pull setup is exactly the kind of tool that wins organized games.
The smart move: grab him free during the release event if you can, then decide whether to invest Coins into leveling him after you've felt out his kit. Since he's brand-new, expect his numbers to move in the next balance patch — don't dump your entire Coin stash into him on day one.
FAQ
When does Cosmo release in Brawl Stars? Cosmo releases in September 2026 with Season 54 "Royal Academy." Supercell's official reveal said he "arrives next week" after the September 3 season launch, pointing to the week of September 8, 2026, with a free early-access event. Because launch timing can shift, confirm the exact date in-game.
What rarity is Cosmo and how much does he cost? Cosmo is a Mythic Brawler. After his free release event, he costs 1,900 Mythic Credits to unlock through Brawler Blast — the same cost as any Mythic.
What is the best Star Power for Cosmo? Precession (+25% orbit speed) is the best default for solo and ladder because it makes your shots land more consistently. Switch to Ammo Attractor (restore 2 ammo on Super hit) when you play in a coordinated team that can reliably convert his Gravitational Pull Super.
What is the best Gadget for Cosmo? Planetary Pushback (knockback) is the safest all-around Gadget — it protects a fragile controller from assassins and dives. Use Telescope Trap in bush-heavy maps or against dash-heavy lineups to shut down mobility.
Is there a code to get Cosmo for free? No. Brawl Stars codes and QR codes only give cosmetics and currency, never Brawlers. The only free way to get Cosmo is his in-game release event; after that, it's Brawler Blast with Credits. Ignore any "free Cosmo code" or "free gem generator" — those are scams.
Is Cosmo good in Showdown? No. Cosmo is weak in solo Showdown because his Super needs teammates to exploit the marked target and he's squishy with no strong escape. He belongs in coordinated 3v3 modes like Gem Grab, Brawl Ball, Hot Zone, and Knockout.
