Author note: Written by Jachin, a 23-year Resident Evil series fan based in Seoul, South Korea. This guide is based on 6 full RE9 playthroughs on PS5 and Steam (Casual → Insanity → NG+ Insanity completions). All strategies, timings, and locations have been personally tested across the v1.02 patch. AI tools were used only for grammar review and note organization; no AI-generated content appears in strategy analysis.
Verified on: v1.02 + DLC patch · Last reviewed: May 30, 2026 · About the author · Editorial policies
All 10 RE9 bosses ranked best to worst. Based on fight design quality, memorability, narrative impact, and player satisfaction. Not a difficulty ranking — see our difficulty rankings for that. This is about which boss fights are actually great versus which feel like obligation.
| Rank | Boss | Campaign | Tier |
|---|---|---|---|
| #1 | Victor Gideon | Leon (final) | S-tier — masterpiece |
| #2 | Chunk | Grace (final) | S-tier — masterpiece |
| #3 | Mr. X / Super Tyrant | Leon | A-tier — excellent |
| #4 | Titan Spinner | Leon | A-tier — excellent |
| #5 | Plant 43 | Shared | B-tier — solid |
| #6 | The Commander | Shared | B-tier — solid |
| #7 | Blister Borne | Grace | B-tier — solid |
| #8 | The Girl | Grace | C-tier — flawed |
| #9 | The Chef (optional) | Grace | C-tier — flawed |
| #10 | Sterilization Chamber Drone Swarm | Shared | D-tier — skip |
Each boss was scored across 5 dimensions:
| Dimension | What it measures | Weight |
|---|---|---|
| Fight design | Multi-phase variety, mechanics, arena interaction | 30% |
| Memorability | Visual identity, music, lasting impression | 20% |
| Narrative impact | Does the fight matter to story? | 20% |
| Mechanical creativity | Does it teach you something new? | 15% |
| Difficulty-to-reward ratio | Is the challenge balanced? | 15% |
Why #1: 4 phases. Phase 4 is exclusive to Insanity difficulty and is widely considered the best single boss encounter in RE history. Multi-stage music. Multiple weak points. Tight parry windows. Genuinely earned victory.
Best moment: Insanity Phase 4 "Mortal Edge spam" sequence — 6 consecutive Mortal Edges in 4 seconds. Perfect parry or instant death.
Replay value: ★★★★★ Different difficulty levels feel like different fights.
See our complete Victor Gideon strategy.
Why #2: Multi-arena structure. Phase 1 in cellar (RE7 callback), Phase 2 outdoor chase, Phase 3 mechanical execution. The final QTE prompt creates the emotional climax. The Insanity codex reveal that Chunk is Marcus Halverson reframes the entire fight as victim release.
Best moment: The 5-second QTE prompt with binary outcome. No other RE fight has this much consequence per second.
Lore depth: See Chunk origin mystery — knowing Marcus's family is alive but unaware changes everything.
Replay value: ★★★★★ Different difficulty unlocks different codex tiers.
See our complete Chunk strategy.
Why #3: Direct RE2 callback that earns its nostalgia. Two distinct phases (regular Mr. X then transformation to Super Tyrant). Visual design is franchise-iconic. Slightly below #2 because it's a single-arena fight without QTE depth.
Best moment: The transformation cutscene. RE veterans will scream.
Replay value: ★★★★ Insanity makes him effectively un-stunnable.
See our Mr. X strategy.
Why #4: Giant spider boss in an urban environment. Three phases. Insanity adds entirely new Phase 4 with exposed core. Combat creativity is high — vertical positioning, environmental hazards.
Best moment: Insanity Phase 4 reveal — most players don't expect the fight to continue.
Replay value: ★★★★ Insanity Phase 4 alone makes replay valuable.
See our Titan Spinner strategy.
Why #5: The franchise's signature mold boss. Well-designed mechanics (corruption tracks player). Critically, the fight is somewhat similar across both campaigns — Grace and Leon experience near-identical fights. This drags down the rank because it lacks campaign-specific variation.
Best moment: The corruption tracking — you can't just camp.
Replay value: ★★★ Same fight regardless of character.
See our Plant 43 strategy.
Why #6: Tactical melee enemy with charge attacks. Decent fight design but somewhat anonymous — feels like a generic "tough enemy" rather than a memorable boss. Insanity's instant-execute attack is interesting but feels punitive rather than fair.
Best moment: Pre-Insanity, none truly stand out. On Insanity, the command-override attack creates dread.
Replay value: ★★★ Standard fight, Insanity gimmick.
See our Commander strategy.
Why #7: Mid-campaign mini-boss with body-horror design. Mechanically interesting (multi-target weak points). The fight is short and doesn't overstay its welcome. Solid but not exceptional.
Best moment: First view of the boss — the design is genuinely unsettling.
Replay value: ★★★ Fast fight; not much to replay for.
See our Blister Borne strategy.
Why #8: Conceptually interesting (child-like enemy with adult-level threat) but mechanically frustrating. The fight relies on stealth-into-combat transitions that feel inconsistent. Many players find it tedious — the consensus least-loved A-tier-difficulty fight.
Best moment: Initial stealth approach — the build-up is good.
Worst moment: The 3rd attempt or later — you start to resent it.
Replay value: ★★ Difficulty makes it harder to want to replay.
See our The Girl strategy.
Why #9: Easy-to-miss optional content with weak fight design. Rewards a unique cosmetic but the fight itself is forgettable. Capcom seemed to treat it as a fan-service Easter egg rather than designing it as a real boss.
Best moment: Finding the trigger — the discovery moment is fun.
Replay value: ★ Cosmetic reward only.
See our Chef strategy.
Why #10: Listed as a "boss encounter" in some guides but really just a sustained combat sequence. No phases, no memorable design, no lore. Pure attrition fight in a single room.
Replay value: ★ Pure padding.
Honest take: skip the codex entry. This isn't a real boss — it's an inflated encounter.
| Category | Winner | Why |
|---|---|---|
| Most cinematic | Victor Gideon | Phase 4 reveal is unforgettable |
| Most lore-heavy | Chunk | Marcus Halverson backstory recontextualizes everything |
| Best music | Mr. X / Super Tyrant | RE2 callback theme on overdrive |
| Best arena design | Titan Spinner | Vertical urban environment |
| Best Insanity escalation | Victor Gideon | Phase 4 exclusive to Insanity |
| Most underrated | Blister Borne | Body-horror design deserves more praise |
| Best for speedrun | The Commander | Predictable patterns, fast cleanup |
| Worst for completionists | The Chef | Optional content not worth the hunt for many |
Q: This ranking differs from your difficulty ranking. Why?
A: Difficulty ranking measures how hard a fight is. This ranking measures whether the fight is good. Hard ≠ good. The Girl is hard but flawed; Victor Gideon is hard and exceptional.
Q: Where does the Final Choice QTE rank?
A: It's part of Chunk's fight (#2), not separate. The QTE elevates Chunk's ranking significantly.
Q: Is Plant 43 really only B-tier?
A: Yes — it's a good fight but unchanged between Grace and Leon campaigns. Other RE bosses with this design level (RE7's Marguerite, RE8's Lady D) get higher praise because they have more unique variation.
Q: Does this ranking change for first-time vs returning players?
A: Slightly. First-time players will rank Plant 43 higher (novelty). Returning players will rank Mr. X higher (RE2 nostalgia). Veterans focus on fight design (top ranks unchanged).
Q: What's the best boss in the entire Resident Evil franchise?
A: RE7's House Beneviento is widely cited as the franchise GOAT. Victor Gideon (#1 here) is the closest modern equivalent. Both rely on multi-stage variety and unconventional design.
Q: Are there any unfair bosses on Insanity?
A: The Girl on Insanity is widely considered the franchise's worst Insanity experience — pure RNG dependency. Victor Gideon Phase 4 is hard but fair. The Commander's instant-execute attack is controversial but avoidable.
Q: Will RE10 likely raise the bar?
A: Possibly. RE9 raised it from RE4 Remake. RE10 will need to outdo Victor Gideon Phase 4 to advance the franchise. Director Nakanishi confirmed he's "thinking about" how to top this.
Was this guide helpful? Let us know — we update tier rankings monthly based on community feedback and balance patches.
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