An unofficial, single-file team-composition sandbox for Marvel Rivals Season 9. Slot six heroes, see exactly which team-up loadouts go Enhanced, and brute-force the best comps — all in one HTML file with zero dependencies.
▶ Try it live: randolin.github.io/rivals-teamup-lab
The full board — six slots, live team-up readout, roster intel, and the optimizer, with the avatar pack installed:
No avatars? No problem — without the optional icon pack, heroes render as text tiles and every feature still works:
Mobile layout — collapses to a single-column scroll with touch-sized controls:
Season 9 reworked team-ups: every hero has two team-up loadouts, each with a base effect (always on) and an enhanced effect (active when the named partner is on your team) — but only one loadout equipped per match. Keeping track of 104 team-ups across 50+ heroes in your head is miserable. This tool doesn't make you.
- Build board — six slots, click or drag heroes in. Each card shows the hero's two partners as buttons; click one to pin that loadout, or let the auto-equip pick whichever loadout's partner is already on the team.
- Live readout — every slotted hero's equipped team-up with its official base and enhanced descriptions, plus synergy lines drawn between enhanced pairs.
- Roster intel — dots on every unslotted hero show how they'd connect to your current team: gains enhanced (violet), grants enhanced to a selected loadout (blue), or grants via a loadout swap (blue ring).
- Optimizer — pick a role comp (2-2-2, 1-3-2, …) and Find Teams enumerates every legal roster for it, ranked by enhanced count. Lock heroes to force them (and their selected team-up) into every result. Scan Presets badges all 16 comps with their best possible score under your current locks.
- Shareable links — the full board state (heroes, locks, loadout picks, comp)
lives in the URL hash. Copy the address bar, paste it in Discord, argument settled:
…#t=thor.vL0,hela.d,deadpool.s1&c=1-3-2 - Mobile friendly — collapses to a single-column layout with touch-sized controls.
No build, no install, no network requirement beyond Google Fonts (which degrades
gracefully offline). Either use it at
randolin.github.io/rivals-teamup-lab
or download index.html and open it in any modern browser (2023+).
The tool works fully without images — heroes render as text tiles. With an
avatars/ folder beside the HTML, tiles and cards use icons in three tiers:
| Tier | Filename | Shown when |
|---|---|---|
| Normal | Hero_Icon_<Name>.webp |
No enhanced team-up available |
| Lord | Lord_Icon_<Name>.webp |
Enhanced available, but not the active pick |
| Champion | Champion_Icon_<Name>_Animated.webp |
Enhanced and activated (animated) |
<Name> is the in-game name with spaces/ampersands as underscores, capitalization
preserved: The_Punisher, Jeff_the_Land_Shark, Cloak_Dagger, Star-Lord.
Missing tiers fall back downward (Champion → Lord → Normal → text), so a partial
set is fine. A fully-firing team literally animates.
Icons in this repo were sourced from the community-maintained Marvel Rivals Wiki.
Team-up names and base/enhanced descriptions are synced to the official Marvel
Rivals site's Season 9 team-up pages, as of July 10, 2026. Balance patches
will drift numbers over time, and The Hood's team-up loadouts arrive mid-season —
the data is one plainly-formatted RAW array at the top of the file's script if
you spot something stale. Corrections welcome via Issues or PRs.
Hero partnerships are packed into bitmasks, so scoring a candidate team is a few AND operations. Find Teams enumerates every combination for the selected comp (tens to hundreds of thousands of teams, under half a second), buckets results by enhanced count and lock satisfaction, and applies a diversity filter so the top list isn't ten near-identical rosters. Locked heroes are pinned to whichever loadout is displayed at search time — what you see is what gets enforced.
Bug reports, stale-data corrections, and feature ideas → GitHub Issues. The whole app is one commented HTML file; PRs are easy to review.
In the spirit of transparency: this tool was "vibe-coded" — designed, iterated, debugged, and reviewed in collaboration with AI tools, with a human directing, testing, and shipping it. Judge the result on its merits: the entire app is one readable, commented HTML file with no build step, no trackers, no accounts, and no network calls beyond Google Fonts — auditable in a single sitting if you'd like to see for yourself.
Code is released under the MIT License. The license covers the code
only. Files in avatars/ are the property of NetEase Games and Marvel, included
non-commercially for identification purposes, and will be removed immediately upon
request by the rights holders — the tool is fully functional without them.
This is a free fan-made tool. It is not affiliated with, endorsed by, or connected to NetEase Games or Marvel in any way. Marvel Rivals and all associated characters and materials are trademarks and copyrights of their respective owners.