diff --git a/paper-api/src/main/java/org/bukkit/entity/Husk.java b/paper-api/src/main/java/org/bukkit/entity/Husk.java
index 17139a2e7..85ada1c67 100644
--- a/paper-api/src/main/java/org/bukkit/entity/Husk.java
+++ b/paper-api/src/main/java/org/bukkit/entity/Husk.java
@@ -3,4 +3,39 @@ package org.bukkit.entity;
 /**
  * Represents a Husk - variant of {@link Zombie}.
  */
-public interface Husk extends Zombie { }
+public interface Husk extends Zombie {
+
+    /**
+     * Get if this entity is in the process of converting to a Zombie as a
+     * result of being underwater.
+     *
+     * @return conversion status
+     */
+    @Override
+    boolean isConverting();
+
+    /**
+     * Gets the amount of ticks until this entity will be converted to a Zombie
+     * as a result of being underwater.
+     *
+     * When this reaches 0, the entity will be converted.
+     *
+     * @return conversion time
+     * @throws IllegalStateException if {@link #isConverting()} is false.
+     */
+    @Override
+    int getConversionTime();
+
+    /**
+     * Sets the amount of ticks until this entity will be converted to a Zombie
+     * as a result of being underwater.
+     *
+     * When this reaches 0, the entity will be converted. A value of less than 0
+     * will stop the current conversion process without converting the current
+     * entity.
+     *
+     * @param time new conversion time
+     */
+    @Override
+    void setConversionTime(int time);
+}
diff --git a/paper-api/src/main/java/org/bukkit/entity/PigZombie.java b/paper-api/src/main/java/org/bukkit/entity/PigZombie.java
index 2f086728e..ae9eaaa8e 100644
--- a/paper-api/src/main/java/org/bukkit/entity/PigZombie.java
+++ b/paper-api/src/main/java/org/bukkit/entity/PigZombie.java
@@ -33,4 +33,28 @@ public interface PigZombie extends Zombie {
      * @return True if the zombie is angry, otherwise false.
      */
     boolean isAngry();
+
+    /**
+     * <b>Not applicable to this entity</b>
+     *
+     * @return false
+     */
+    @Override
+    public boolean isConverting();
+
+    /**
+     * <b>Not applicable to this entity</b>
+     *
+     * @return UnsuppotedOperationException
+     */
+    @Override
+    public int getConversionTime();
+
+    /**
+     * <b>Not applicable to this entity</b>
+     *
+     * @param time unused
+     */
+    @Override
+    public void setConversionTime(int time);
 }
diff --git a/paper-api/src/main/java/org/bukkit/entity/Zombie.java b/paper-api/src/main/java/org/bukkit/entity/Zombie.java
index cf53ea22f..bdc6206af 100644
--- a/paper-api/src/main/java/org/bukkit/entity/Zombie.java
+++ b/paper-api/src/main/java/org/bukkit/entity/Zombie.java
@@ -48,4 +48,35 @@ public interface Zombie extends Monster {
      */
     @Deprecated
     public Villager.Profession getVillagerProfession();
+
+    /**
+     * Get if this entity is in the process of converting to a Drowned as a
+     * result of being underwater.
+     *
+     * @return conversion status
+     */
+    boolean isConverting();
+
+    /**
+     * Gets the amount of ticks until this entity will be converted to a Drowned
+     * as a result of being underwater.
+     *
+     * When this reaches 0, the entity will be converted.
+     *
+     * @return conversion time
+     * @throws IllegalStateException if {@link #isConverting()} is false.
+     */
+    int getConversionTime();
+
+    /**
+     * Sets the amount of ticks until this entity will be converted to a Drowned
+     * as a result of being underwater.
+     *
+     * When this reaches 0, the entity will be converted. A value of less than 0
+     * will stop the current conversion process without converting the current
+     * entity.
+     *
+     * @param time new conversion time
+     */
+    void setConversionTime(int time);
 }
diff --git a/paper-api/src/main/java/org/bukkit/entity/ZombieVillager.java b/paper-api/src/main/java/org/bukkit/entity/ZombieVillager.java
index f6ab96c8c..256e7cc23 100644
--- a/paper-api/src/main/java/org/bukkit/entity/ZombieVillager.java
+++ b/paper-api/src/main/java/org/bukkit/entity/ZombieVillager.java
@@ -8,12 +8,48 @@ public interface ZombieVillager extends Zombie {
     /**
      * Sets the villager profession of this zombie.
      */
-    public void setVillagerProfession(Villager.Profession profession);
+    @Override
+    void setVillagerProfession(Villager.Profession profession);
 
     /**
      * Returns the villager profession of this zombie.
      *
      * @return the profession or null
      */
-    public Villager.Profession getVillagerProfession();
+    @Override
+    Villager.Profession getVillagerProfession();
+
+    /**
+     * Get if this entity is in the process of converting to a Villager as a
+     * result of being cured.
+     *
+     * @return conversion status
+     */
+    @Override
+    boolean isConverting();
+
+    /**
+     * Gets the amount of ticks until this entity will be converted to a
+     * Villager as a result of being cured.
+     *
+     * When this reaches 0, the entity will be converted.
+     *
+     * @return conversion time
+     * @throws IllegalStateException if {@link #isConverting()} is false.
+     */
+    @Override
+    int getConversionTime();
+
+    /**
+     * Sets the amount of ticks until this entity will be converted to a
+     * Villager as a result of being cured.
+     *
+     * When this reaches 0, the entity will be converted. A value of less than 0
+     * will stop the current conversion process without converting the current
+     * entity.
+     *
+     * @param time new conversion time
+     */
+    @Override
+    void setConversionTime(int time);
 }