Pet Fighters on Roblox throws dozens of pets at you, and most of them are not worth a team slot. The difference between climbing the leaderboard and getting wiped by endgame bosses often comes down to which three pets you bring into battle — and whether their synergies actually hold up under pressure. Below is a complete ranking of every notable pet, organized from the undisputed best to the ones you should avoid entirely.
Quick answer: Doomsday 3000, OG Eegis, Archangel, Incorporeal Intruder, Late Empress, and Plasmax are the S tier picks. Doomsday 3000 is widely considered the single strongest pet in the game thanks to its execute mechanic and anti-heal passive.

S Tier Pets in Pet Fighters
S tier pets define the meta. They either provide massive unconditional damage multipliers, game-breaking crowd control, or unique mechanics that no other pet can replicate. If you pull any of these, build your entire squad around them.
| Pet | Key Ability | Why It's S Tier |
|---|---|---|
| Doomsday 3000 | Execute at 20% HP + anti-heal | Enemies freeze for 2 seconds at 20% health, then instantly faint. Also blocks healing, shutting down health-pot spam in PvP and boss fights. |
| OG Eegis | 1.75x damage to all pets and weapons | A flat, unconditional multiplier across your entire loadout. No conditions, no cooldowns — everything you do just hits 75% harder. Also randomly inflicts status conditions. |
| Archangel | 20% chance to double team attack speed + 1.5x healing item effectiveness | Turns your other pets into rapid-fire machines while keeping you topped off on health. The best pure enabler in the game. |
| Late Empress | 25% chance for team healing aura + permanent 25% slow on enemies | The slow persists until the enemy dies, letting you kite bosses indefinitely. Paired with the healing aura, she makes your team nearly unkillable. |
| Incorporeal Intruder | Full invisibility for you and your pets | Walk past every trash mob straight to the boss or loot chest. Saves enormous time during exploration and farming runs. |
| Plasmax | 2x walk speed, 2x jump power, 1.5x weapon damage and health (solo only) | Requires unequipping all other pets. The raw stat boost is enormous for solo exploration, but you sacrifice all team synergy. |

A Tier Pets in Pet Fighters
A tier pets are strong enough to carry you through most content, but fall just short of the S tier due to cooldown limitations or narrower utility. They pair extremely well with S tier picks.
| Pet | Key Ability | Notes |
|---|---|---|
| Karaoka Crab | AoE whirlpool + bubble shield (25% team HP increase) | Excellent crowd control and survivability. The trade-off is zero offensive buffs, so your fights take longer. Pair with a damage-focused pet. |
| Supernova | Hits 3 enemies by default + hyper sentry every 2 minutes | The sentry acts like a fourth party member for 10 seconds, rapid-firing based on Supernova's damage. The 2-minute cooldown is the only thing keeping it out of S tier. |
| Lord of the Skies | Tornado every 2 minutes (2x DPS to trapped enemies) + 20% chance to double team attack speed | Devastating AoE against grouped mobs. The long cooldown hurts during speed farming, but the tornado can wipe entire pulls in the Highlands. |
| Fallen Frost Angel | Snowstorm that slows enemies and deals tick damage | Reliable crowd control that lets you reposition when overwhelmed. A strong defensive pick for harder content. |
| Marquis of Mysteria | 10% chance to spawn a health-leeching black hole on attack | Underrated sustain pet. When the black hole triggers, you heal through incoming damage while it does work passively. The RNG proc rate is the main drawback. |
| Phoenix | Sacrifices itself to revive you at full HP with 3 seconds of invincibility | The ultimate safety net. If you mistime a dodge roll against a boss, Phoenix saves the run. One-time use per life. |

B Tier Pets in Pet Fighters
B tier pets serve specific roles well but are too niche or too passive to justify a permanent team slot in most situations. They shine in dedicated farming setups or particular weapon builds.
| Pet | Key Ability | Notes |
|---|---|---|
| Solaris | 5-second blind + massive sunlash attack | Visually impressive and the blind buys time, but cooldowns hold it back. If you lack the DPS to capitalize on the blind window, it just delays the inevitable. |
| Greatest Chef | Doubles katana attack speed + whirlpool trap | Secret rarity. Incredible for melee katana builds specifically, but completely dead weight with any other weapon type. Too restrictive for general use. |
| 50 Stone Fairy | 2x gold from pixie pet kills | A farming pet, not a combat pet. Excellent for dedicated gold runs in areas like the Glimmering Grotto, but brings zero damage to boss fights. Swap it out before any serious encounter. |
| Merlinian Martyr | 100% XP boost | Great for leveling, but contributes nothing to damage output. Treat it as a grind tool, not a team member. |
C Tier Pets in Pet Fighters
C tier pets have abilities that sound useful on paper but fail to deliver meaningful value in practice. They either depend too heavily on other specific pets or buff elements that aren't competitive in the current meta.
| Pet | Key Ability | Why It Falls Short |
|---|---|---|
| Holo Raptor | Summons a hologram dealing 50% of raptor's damage | Pure selfish single-target damage with zero team utility. In a meta that demands AoE buffs and crowd control for boss fights, a small extra damage source is not enough. |
| Crimson Leviathan | Doubles damage against whirlpool-trapped enemies | Completely dependent on pairing with a whirlpool pet like Karaoka Crab. Without that specific combo, it does literally nothing. |
| Candy Floss | 1.5x damage for pixie pets | Pixies are not the strongest element right now, so you're buffing a mediocre typing. Skip unless you're running a dedicated pixie team for fun. |

D Tier Pets in Pet Fighters
D tier pets are not worth equipping in any serious team composition. Their abilities are either too situational, too restrictive, or fundamentally flawed in design.
| Pet | Key Ability | Why It's D Tier |
|---|---|---|
| Frostbite | 5-second freeze zone + 1.5x damage buff while standing in the frozen area | The damage buff only applies while you stand inside the ice zone. Leaving the zone makes the pet useless. No practical reason to stay stationary during combat. |
| Devious Hunter | Marks rare+ pets for 3x weapon damage | Only useful for hunting specific rare spawns. Worthless for progression, raiding, or any content where you're not farming a particular mob. Goes straight to storage once you have the pets you need. |
| Gearwing Guardian | 1.5x shotgun damage | Only buffs shotguns. If you prefer rifles, katanas, or any other weapon type, this pet does nothing for you. Far too restrictive. |
Team Building and Pet Slot Rules
You can equip up to 3 pets on your team at once. Completing the Pet Collection X quest unlocks a fourth slot, which gives you significantly more flexibility for synergy combinations. Keep in mind that certain pets — like Plasmax — cannot be equipped alongside any other pet, so their solo-only restriction effectively locks you into a one-pet setup.

Best Team Compositions
The strongest general-purpose squad pairs an S tier damage multiplier with crowd control and sustain. Running OG Eegis for the flat 1.75x damage boost alongside Archangel for attack speed doubling and healing creates an extremely aggressive core. Your third slot can flex between Late Empress for boss kiting, Fallen Frost Angel for wave survival, or Karaoka Crab for raw HP padding.
For exploration and farming, Incorporeal Intruder paired with 50 Stone Fairy and Merlinian Martyr lets you skip trash mobs, earn double gold, and gain double XP simultaneously — though you'll want to swap to a combat lineup before any boss encounter.
Doomsday 3000 fits into virtually any team. Its execute mechanic shaves off the final 20% of every enemy's health bar for free, and the anti-heal passive shuts down regeneration-heavy bosses that would otherwise outlast you. If you pull one from the Empire Bay power lines, it should never leave your roster.
Pet Fighters is still in active development, and balance changes can shift these rankings. The pets listed in S and A tier have consistently performed well across patches, but keep an eye on update notes for any ability reworks that might shake up the meta.