Pet Fusion
Fuse three copies of a pet into the next star tier — costs by rarity, what each star unlocks, and which pets can fuse.
How fusion works
Pet Fusion turns duplicates into stars. Put 3 copies of the same pet at the same star into the forge, pay the essence, and you get back one copy at the next star. There is no failure roll — every fuse succeeds. The result keeps the XP invested in all three inputs (their level-up costs are pooled), so a fused pet is never lower level than its best input.
- Unlocks
- Marquee level 4 (Pet Fusion)
- Ladder
- 1★ → 2★ → 3★ (max 3★)
- Inputs
- 3 × same species, same ★
- Success rate
- 100%
- Copies needed for 3★
- 9 at 1★ (3 fuses to 2★, then 3 × 2★ → 3★)
Essence cost
Priced by rarity. Mythics pay their own prices because each mythic star buys a whole new ability.
| Rarity | 1★ → 2★ | 2★ → 3★ | Total to 3★ |
|---|---|---|---|
| COMMON |  500 | 1,500 | 2,000 |
| UNCOMMON | 1,000 | 3,000 | 4,000 |
| RARE | 1,500 | 4,500 | 6,000 |
| EPIC | 2,000 | 6,000 | 8,000 |
| LEGENDARY | 2,500 | 7,500 | 10,000 |
| MYTHIC | 15,000 | 50,000 | 65,000 |
Mythic prices come from their own table (→ 2★ 15,000, → 3★ 50,000); everyone else pays the rarity base for 2★ and three times it for 3★ (common 500, uncommon 1,000, rare 1,500, epic 2,000, legendary 2,500).
What stars do
Multi-ability pets: one ability per star
Any pet with two or three abilities is on the star ladder — ability N needs N★. The first ability is live from the day you get the pet; the second switches on at 2★ and the third at 3★. Levels make the unlocked abilities stronger; stars decide which are on.
| Pet | Rarity | 1★ | 2★ | 3★ |
|---|---|---|---|---|
 Ember Eel | COMMON | Molten Glide | Slipstream | Flash Finish |
 Fire Salamander | COMMON | Heat Pool | Ember Skin | First Spark |
 Lucky Rabbit | COMMON | Bronze Portal Chance | Silver Portal Chance | Gold Portal Chance |
 Pearl Oyster | COMMON | Grit Toll | Nacre Layers | Seed Pearl |
 Piggy Banker | COMMON | Bronze Coin Payout | Silver & Gold Coin Payout | Emerald & Ruby Coin Payout |
 Pistol Shrimp | COMMON | Snap Shock | Shockwave | Undertow Snap |
 Chambered Nautilus | UNCOMMON | Sealed Chamber | Undertow Pull | Spiral Vault |
 Giant Isopod | UNCOMMON | Ballast Shell | Deep Larder | Pressure Hull |
 Magma Slug | UNCOMMON | Banked Heat | Slow Burn | Slag Refund |
 Pyre Moth | UNCOMMON | Drawn to Flame | Ember Wings | Immolation |
 Silver Magpie | UNCOMMON | Silver Bucket Chance | Gold Bucket Chance | Emerald & Ruby Chance |
 Vinnie the Hamster | UNCOMMON | Door Luck | Mega Win Magnet | Head Start |
 Basalt Armadillo | RARE | Heat Sink | Cooling Burrow | Ash Ward |
 Bramble Hedgehog | RARE | Green Thumb | Extra Sprout | Favorite Crop |
 Sailfish | RARE | Full Sail | Slipstream | Trade Winds |
 Sticker Fox | RARE | Green & Yellow Pack Rate | Pink & Blue Pack Rate | Gold Card Chance |
 Hoard Mimic | EPIC | Hoarder's Cut | Full Belly | Rigged Wheel |
 Vent Crab | EPIC | Marked Vent | Steam Balm | Vent Chain |
 Manta Ray | LEGENDARY | Wide Currents | Eruption Swell | Filter Feed |
 Void Warden | LEGENDARY | Jackpot Loot Boost | Jackpot Wheel Continue | Jackpot Chance |
 Wildfire Drake | LEGENDARY | Ignite | Spreading Flames | Gate Blaze |
 Aurora Wyrm | MYTHIC | Aurora Ribbon | Frozen Fortune | Twin Tails |
 Baby Shark | MYTHIC | Iron Jaw | Breaching Bite | Double Chomp |
 Doppelgeist | MYTHIC | Loot Echo | Crown of Elusives | Raid Aura |
 Dragon Hatchling | MYTHIC | Treasure Hoard | Hoarder's Pride | Hoard Hunt |
 Phoenix Chick | MYTHIC | From the Ashes | Rebirth | Blazing Return |
 Solstice Fawn | MYTHIC | Twin Suns | Longest Day | Second Sun |
Single-ability pets: perks per star
A pet with one core ability keeps that ability from 1★; its 2★ and 3★ add new perks around it (shown on each pet's page). Tier-based pets — the Lucky Rabbit, Piggy Banker, Silver Magpie, Sticker Fox, Crystal Cat and Forge Bear — express their stars as reach: each star extends the same effect to the next bucket tier or pack colour.
| Pet | Rarity | 1★ | 2★ | 3★ |
|---|---|---|---|---|
 Dew Snail | COMMON | Dew Keeper | Deep Roots | Early Bloomer |
 Diving Puffin | COMMON | Deep Dive | Snowball | Fish Market |
 Lucky Ladybug | COMMON | Lucky Charm | Spreading Luck | Field of Fortune |
 Snow Hare | COMMON | Undermine | Cold Snap | Powder Thump |
 Bandit Raccoon | UNCOMMON | Sweet Tooth | Bin Diver | Second Helping |
 Bouncy Frog | UNCOMMON | Spring Legs | Springboard | Overleap |
 Flower Fairy | UNCOMMON | Garden Sense | Twin Stems | Sun Dance |
 Forge Bear | UNCOMMON | Forgemaster | Tempered Steel | Twin Casting |
 Rain Beetle | UNCOMMON | Heavy Watering | Cloudburst | Splash |
 Fruit Worm | RARE | Quick Wriggle | Quicker Wriggle | Frantic Wriggle |
 Glacier Golem | RARE | Living Wall | Frozen Echo | Slow Thaw |
 Sun Hummingbird | RARE | Double Nectar | Pollen Sack | Sticky Pollen |
 Crystal Cat | EPIC | Gem Magnet | Gem Hoard | Gem Jackpot |
 Owl Sage | EPIC | Ball Split | Portal Sage | Ball Refund Chance |
 Avalanche Yeti | LEGENDARY | Rolling Snowball | Aftershock | Peg Pounder |
 Charm Octopus | LEGENDARY | Charm | Twin Charm | Triple Charm |
 Meadow Mole | LEGENDARY | Mole Hole | Buried Treasure | Tunnel Network |
The Owl Sage is the one pet whose core ability is also multiplied by its stars: ×1.6 at 2★ and ×2.2 at 3★.
Pets that cannot be fused
Elusive pets have no claw pool to pull duplicates from, so most of them do not fuse. The ones that arrive fully starred:
Not fusable at all: 
Aurora Narwhal, 
Prism Peacock. Elusive pets that DO fuse (their duplicates are the whole point): Void Warden, Hoard Mimic, Vinnie the Hamster, Fruit Worm, Bramble Hedgehog.
Shiny fusion
A pet at its max star can still change: fuse an owned shiny of the same species into it for 10,000 and the base pet becomes shiny, keeping its level, XP, items and slot. Guaranteed. See Shiny pets.
Amped stars (Ball Grove)
Only 3★ pets may harvest in the Ball Grove. A finished run can turn one of the pet's stars purple ("amped"): the ability tied to that star gains +5% (flat counts step up by 1; cadences get faster). Odds per run — Hard: 1★ 1 in 10, 2★ 1 in 25, 3★ 1 in 50; Regular: 1★ 1 in 30, 2★ 1 in 75, 3★ 1 in 150.
Tips
- Fuse before you feed: the pooled XP carries over, but three level-1 copies fuse for the same essence as three level-100 copies.
- Untradable free-pull copies fuse just fine — fusion is where they belong, since they cannot be salvaged.
- Mythic fusion is the expensive one (65,000 essence to 3★) but each star is a whole new ability.
See also
- Pets — Every pet in Ballin Tycoon — rarities, claw odds, abilities, levelling costs, stars, evolution, shinies and where each one comes from.
- Pet Salvage & Essence — Turn spare pets into Pet Essence — yields by rarity, the gem bonus, what cannot be salvaged, and everything essence pays for.
- Shiny Pets — Shiny variants roll at 1 in 1,000 on every pet you receive — odds, shiny fusion, and a gallery of every shiny sprite.
- Pet Evolution — Evolve a 3★ level-100 pet through its trial — stones, essence, the 9 trials, and the level-200 forms.
- Ball Grove — The World 3 fruit-harvest minigame: pick ripe fruit off the tree, set the bins, escort golden fruit past the crows and grow Mega Melons — every rate, multiplier, basket roll and trophy.