Marvel Rivals Boss Guide: How to Beat Galactus, Thanos, and Doctor Doom

Boss fights in Marvel Rivals are not like the PvP. They're PvE raids designed for six player teams with mechanics you have to learn or you wipe. Simple as that. I've spent enough hours in these encounters to know which strats work, which ones sound good but fail, and which bosses are actually worth farming for loot.

The three major bosses right now are Galactus, Thanos, and Doctor Doom. Galactus is the Season 1 permanent raid boss with a massive health pool and three distinct phases. Thanos rotates in during Infinity Saga events roughly every three months and has six phases, one per Infinity Stone. Doctor Doom is a monthly recurring fight that's actually the best one for farming because it's the fastest clear.

Galactus (500,000 HP, 3 Phases)

This fight requires two hitscan DPS minimum. Hela and Punisher are nearly mandatory for the cosmic ring weak points in phase one. If you bring all projectile heroes you literally cannot complete the fight.

Phase one has Galactus hovering above the arena, invulnerable, with six cosmic rings orbiting him. These are the weak points. Shoot them with hitscan weapons. Each destroyed ring spawns three Herald adds. Designate one Duelist to clear adds while the other focuses rings. This sounds simple but add management is where most groups fall apart.

Phase two he lands and becomes targetable. The cosmic stomp happens every 15 seconds dealing heavy damage to anyone within 20 meters. Tanks survive it, everyone else needs to be outside the radius. The World Ender Beam targets one player and sweeps across the arena. Hide behind the cosmic debris pillars that spawn during this phase. Tanks hold his attention from opposite sides since he turns slowly. DPS focuses one leg at a time. Destroying a leg staggers him for 5 seconds, that's your damage window.

Phase three is desperation mode. All mechanics fire simultaneously: rings, stomps, beams, and adds. This is a DPS race. Save every ultimate for this phase. Pop Luna's ult for team sustain, Groot ult to trap adds, and unload every DPS ult into Galactus's head. If you used ults in phase one or two you won't have them now and you will wipe.

Best team comp for Galactus: Groot and Magneto as tanks. Groot's walls block the World Ender Beam and Magneto's bubble saves one player from it. Hela and Punisher for DPS. Luna Snow and Rocket for support. Rocket's B.R.B. revive is essential since someone will get caught by a beam.

Thanos (350,000 HP, 6 Phases)

The Infinity Gauntlet phases rotate in a fixed order: Power, Space, Reality, Time, Mind, Soul. Each has a specific counter and if you don't know them you die.

Power Stone phase is massive area damage punches. The counter is spreading out. Don't stack. If your team is clumped, one punch hits everyone.

Space Stone teleports players to random locations around the arena. Group up immediately after the teleport. If you stay split, the next mechanic picks you off one by one.

Reality Stone creates three Thanos illusions. Only one is real. The tell is that the real Thanos casts a shadow. The illusions don't. Call it out when you spot it.

Time Stone slows all players significantly. Luna's ultimate cleanses the slow for the whole team. If you don't have Luna up, you just have to survive until it ends.

Mind Stone mind controls one player for 10 seconds. Do not kill them. Crowd control the controlled player with freeze or sleep. Killing your teammate counts as an actual death.

Soul Stone is the most dangerous. The target gets marked with an orange glow 5 seconds before Thanos activates it. That player must hide behind cover or they die instantly. No revive, no healing, just dead.

Best DPS for Thanos are Star-Lord and Spider-Man. Both can dodge most mechanics and have high single target damage. Luna Snow is essential for the Time Stone cleanse. Mantis can sleep mind controlled teammates safely.

Doctor Doom (250,000 HP + Doombots, 2 Phases)

This is the best boss to farm. Clear time is around 8 minutes with a decent group compared to Galactus taking 20 to 30.

Phase one is pure survival. Doom is invulnerable and six Doombots spawn every 30 seconds. You survive for 3 minutes while killing Doombots. If more than eight Doombots are alive at once, your team wipes. Two DPS focus exclusively on Doombot clearing. Tanks kite. Supports stay alive. It's chaotic but straightforward.

Phase two Doom becomes vulnerable. He uses a force field that blocks all damage for 8 seconds. Don't waste ults during this. Lightning storm drops area circles on all players. Spread out and keep moving. At 50% HP he spawns four more Doombots. Kill them before continuing on Doom or they overrun you.

All PvE boss loot is on a weekly lockout. One clear per boss per week. Legendary skin drop rates are roughly 2% so don't expect one every week. Doctor Doom is the best time to reward ratio for farming.

You cannot solo any of these bosses. They all require a full six player team. Use the in game LFG tool to find groups. Galactus is permanent content, Thanos returns every few months, and Doom is monthly. Don't miss the event bosses when they're active because the exclusive rewards might not come back.

What a Good Raid Group Looks Like

I've been in bad groups and good groups and the difference is always the same. Bad groups don't communicate and blame each other. Good groups call out mechanics before they happen and adapt when something goes wrong.

A good Galactus group has one person shot calling which ring to focus and when to save ults. A bad group has six people shooting six different things and then someone dies to adds and the run falls apart. I mean, it goes from fine to wipe in like 3 seconds. If you're in a group that doesn't talk, you can be the one who starts. Just say focus left ring first or save ults for phase 3. Most people will listen. They just needed someone to say it.

For Thanos, call out the Infinity Stone phase when it transitions. Time Stone, Luna save ult. Five words that prevent a wipe. Communication isn't about being a leader, you know? It's about making sure everyone is on the same page before the mechanic murders all of you.

Also, don't skip the weekly clears. I skipped two weeks figuring I'd catch up later and missed a Thanos rotation that hasn't come back. You know how it is with live service games. Still annoyed about that. You never know which event is the one that won't return.