Cosmo is set to join Brawl Stars in September 2026 alongside Vince (see our Vince build guide) as a Mythic ranged Brawler with a twist: instead of firing straight-line shots, his projectiles orbit outward the longer they travel, and his Super turns a single enemy into a magnet for your team’s incoming fire. If you’re planning to pick him up at launch, here’s the build that gets the most out of his kit — plus the modes where he shines and the habits that separate a good Cosmo from a great one.
Note: Cosmo is still pre-release as of this writing. Gadget, Star Power, and Gear names below are based on the latest reveal and could shift slightly before launch.
Best Brawl Stars Cosmo Build – Quick Setup
If you only remember one loadout, make it this one: Planetary Repulsion (Gadget) + Precession (Star Power) + Damage Gear + Shield Gear. It’s the safest, most flexible combination across almost every mode, giving Cosmo the breathing room he needs at range and a Star Power that makes his unusual attack pattern easier to land consistently.
Brawl Stars Cosmo Build for Most Game Modes
This “default” build works because Cosmo’s core weakness — getting caught at close range — is the same regardless of mode. Planetary Repulsion buys him space when an enemy dives in, and Precession speeds up his orbiting projectiles so they’re harder to dodge and easier to place. Pair that with Damage and Shield Gear, and you’ve got a setup that holds up in Knockout, Bounty, Gem Grab, Hot Zone, and Brawl Ball alike. Swap pieces out only when a specific matchup calls for it.
Brawl Stars Cosmo Build – Best Gadget
Best Gadget for the Brawl Stars Cosmo Build
Cosmo currently has two Gadgets to choose between:
- Planetary Repulsion — knocks back enemies in a targeted area. This is the go-to pick for general play, since it directly answers Cosmo’s biggest problem: getting rushed at close range by Assassins or aggressive tanks. Use it to interrupt a dive, protect an objective, or simply create distance when you’re being pressured.
- Telescopic Trap — reveals an area and briefly stops enemies inside it from using dashes, jumps, or other movement abilities. It’s more situational, but against a lineup built around mobility, shutting down their escape or engage tools can be a huge tempo swing.
For most matches, Planetary Repulsion is the more reliable choice. Save Telescopic Trap for games where the enemy team leans heavily on mobile Brawlers you need to lock down.
Brawl Stars Cosmo Build – Best Star Power
Best Star Power for the Brawl Stars Cosmo Build
Cosmo’s two Star Powers push him in different directions:
- Precession — increases the speed of his projectiles, making his Main Attack easier to land and giving opponents less time to react. It also helps at longer range, where tracking the expanding orbit gets trickier. This is the better pick while you’re still learning his attack timing, since it improves the fundamental skill his kit is built around.
- Ammo Attractor — refunds two ammo whenever Cosmo lands his Super on an enemy. This turns Gravity into more than just a setup tool; it lets you immediately follow up with extra shots on the marked target, which is especially strong when your team is already primed to capitalize.
Precession is the safer, more consistent option overall. Ammo Attractor has a higher ceiling but depends on your team punishing the Super correctly, so it’s better suited to coordinated play than solo queue.
Brawl Stars Cosmo Build – Best Gears
Recommended Gears for the Brawl Stars Cosmo Build
| Gear | Why it works |
|---|---|
| Damage Gear | Helps close out weakened enemies and raises Cosmo’s threat in extended fights |
| Shield Gear | Adds survivability for the moments an enemy does manage to close the gap |
Damage and Shield is the safest, most universal pairing — Cosmo wants to play at range, but he isn’t immune to pressure. A couple of situational swaps worth knowing:
- Speed Gear helps on bush-heavy maps where quick repositioning matters.
- Gadget Charge Gear is worth considering if you’re leaning hard on either Gadget throughout a match.
- Vision Gear pairs well with bushy maps, letting you spot enemies before they get within striking range.
Best Game Modes for the Brawl Stars Cosmo Build
Cosmo’s kit rewards ranged pressure and team coordination, so his mode strength varies:
- Knockout (S-tier): Every elimination counts, and Gravity lets your team focus fire a single target with no respawns to bail them out.
- Bounty (S-tier): Cosmo’s lane control and Super synergy make securing star tokens much easier.
- Gem Grab (A-tier): Strong as a lane controller who keeps enemies off your gem carrier, though he shouldn’t be the one contesting the middle directly.
- Hot Zone (A-tier): Grouped fights around the zone give Gravity plenty of value, though staying alive while enemies collapse on the point takes practice.
- Brawl Ball (B-tier): Usable when your team controls midfield, but the close-quarters, constant-movement nature of the mode works against his preferred spacing.
How to Play the Brawl Stars Cosmo Build Effectively
Cosmo isn’t a point-and-click ranged attacker — his value comes from spacing, prediction, and using his Super to set up teammates rather than chasing kills solo.
Brawl Stars Cosmo Build Tips for Better Matches
- Don’t fight point-blank. His projectiles grow and spread the farther they travel, so firing at close range wastes his kit’s main strength.
- Learn to predict, not just aim. Because Orbit’s projectiles curve outward, you need to anticipate where they’ll intersect an enemy rather than firing straight at them.
- Save Gravity for team fire. The Super is a setup tool, not a burst-damage button — it’s strongest when teammates are loaded and ready to capitalize immediately.
- Pick your Gravity target carefully. The lowest-HP enemy isn’t always the best mark. Consider the gem carrier, the ball holder, a dangerous ranged threat, or anyone with limited mobility who can’t escape the follow-up fire.
- Respect Assassins. Cosmo needs space to function, so keep an escape option available and stay near teammates rather than overextending after landing a Super.
Is the Brawl Stars Cosmo Build Worth Using?
If you enjoy Brawlers with an unconventional playstyle, Cosmo is worth trying. His orbiting attack pattern has a real learning curve, and Gravity adds a genuinely team-oriented mechanic that changes how a squad approaches fights — rather than just another way to deal solo damage.
That said, his ceiling depends heavily on your teammates. In coordinated play, a well-timed Super can swing a fight instantly. In solo queue, his value leans more on his ranged pressure and utility than on random teammates capitalizing on his mark. Since Cosmo is still pre-release, keep an eye on official patch notes at launch in case his numbers or abilities shift before September 2026 — but based on current previews, the Planetary Repulsion + Precession + Damage + Shield build is the strongest starting point for most players.
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