Grow a Chicken Fighter: How to Get the Reaper x Voodoo Fusion

The Reaper Rooster already hits harder than almost anything else in Grow a Chicken Fighter, but it dies faster than its stats suggest. Bolting the Voodoo skill onto it solves that problem in the bluntest way possible, by sending damage straight back at whoever swung first. The fusion itself takes about ten seconds. Getting the two birds you need takes considerably longer.

Quick answer: Fuse a Reaper Rooster with a Doll Hen, then click the Doll Hen’s Voodoo ability in the fusion menu to lock it before you hit confirm. Both chickens hatch from the Haunt Egg.

What the Reaper x Voodoo fusion requires

Two chickens, one skill. The Reaper Rooster is the body you keep, and the Doll Hen is purely a delivery vehicle for Voodoo, which no other chicken carries natively. Both come out of the same egg, which is convenient for farming and brutal for your odds.

Chicken	Source	Hatch chance	Why you need it
Reaper Rooster	Haunt Egg, Blazing Egg	Under 1% from Haunt Eggs	Cosmic-rarity base with the highest base stats in the game
Doll Hen	Haunt Egg, Blazing Egg	Around 2% from Haunt Eggs	The only source of the Voodoo skill

A sub-1% rate means the Reaper is the bottleneck. Expect to crack somewhere in the region of 200 Haunt Eggs before one shows up. The Blazing Egg from the Hot Event can also produce both birds, so it’s worth hatching those whenever that event is running, though no official date is confirmed for its return.

How to fuse Reaper Rooster with the Voodoo skill

The merge is short, but there’s exactly one moment where you can ruin it. Everything below assumes both chickens are sitting in your Flock.

Open your Flock and choose the Fuse option. This pulls up the merge interface where you pick the two birds going into the combination.

Set the Reaper Rooster as your base chicken. This is the one you want walking out of the fusion, so it goes in first.

Add the Doll Hen as the second chicken. The menu will refresh to show the abilities attached to both birds, listed toward the bottom-left of the panel.

Click the Doll Hen’s Voodoo ability to apply a Fusion Lock to it. Locking is what tells the game to carry that specific skill through to the result instead of rolling whatever it feels like.

Spend the spare Lock if you want to. It can hold a cosmetic such as a hat or accessory so the fused chicken keeps the look you like.

Check the two chickens and the locked ability one more time, then confirm the fusion. Once it’s done, it’s done.

Note: There’s a chance the merged bird comes out with the Inverted mutation. Mutations change a chicken’s appearance and add their own perks, so it’s an upside rather than something to reroll for.

Confirming the fusion worked

Open the fused chicken’s info panel in your Flock. A successful merge leaves you with a Reaper Rooster whose listed skill is Voodoo. If it shows any other ability, the lock didn’t register before you confirmed, and the fusion can’t be undone.

There’s really only one way this fails, and it’s skipping the lock. Selecting the two chickens is not the same as selecting the skill. The ability list has to show Voodoo actively locked before the confirm button does anything you want it to.

Haunt Egg farming route for Reaper Rooster and Doll Hen

Haunt Eggs are laid by two chickens. The Creepy Clown produces them at a 75% rate, and the Zombie Chick does it at 100%. The catch is that the Zombie Chick hatches from Haunt Eggs, so you can’t start there. You climb to it through a chain of earlier egg types instead.

Hatch this egg	Until you get	Then it farms
Nest Egg	Cosmo Brat	Scratch Eggs
Scratch Egg	Slugger Hen	Arena Eggs
Arena Egg	Creepy Clown	Haunt Eggs (75%)
Haunt Egg	Zombie Chick	Haunt Eggs (100%)

The Creepy Clown is the real gate here. Once it’s in your coop you have a working Haunt Egg supply, and once the Zombie Chick lands, that supply becomes constant. Fuse spare Zombie Chicks together as you pull them, since that shortens the egg-laying timer and speeds up the whole grind.

From there it’s a numbers game. Keep hatching Haunt Eggs until the Doll Hen and the Reaper Rooster both appear, and don’t sink resources into leveling the Doll Hen along the way. It’s weak on its own and exists in your Flock for exactly one reason.

What Voodoo does on the Reaper Rooster

Most skills in the game are straightforward offense. Voodoo isn’t. It blocks incoming damage and reflects it back at the attacker, then follows up with a multi-hit burst. Its in-game description sets the tone.

Whatever lands on her lands on you. She is fine with the arrangement.

Pairing that with the Reaper covers its one genuine weakness. The Attack and Speed are already top-tier, but the health pool is only moderate, and Voodoo turns every enemy swing into a liability for the enemy. That holds up in Tower climbs and in the Pit, where aggressive opponents essentially punish themselves.

Skills fire automatically in combat, so there’s no activation to time. What you can control is the output, which scales with feeding and leveling the chicken. Voodoo also transfers to other strong bases such as the Founder Rooster or Viking Chicken if you happen to pull a second Doll Hen, though neither gets as much out of it as the Reaper does.

None of this is a fast project. You’re grinding an egg chain to reach a farm, then grinding that farm for a sub-1% pull. But the payoff is a single chicken that carries both Tower progression and PvP, and once Voodoo is locked in, you don’t have to touch it again.