--- a/net/minecraft/entity/monster/ZombieEntity.java
+++ b/net/minecraft/entity/monster/ZombieEntity.java
@@ -186,7 +186,8 @@
       if (!this.field_70170_p.field_72995_K && this.func_70089_S() && !this.func_175446_cd()) {
          if (this.func_204706_dD()) {
             --this.field_204708_bE;
-            if (this.field_204708_bE < 0) {
+
+            if (this.field_204708_bE < 0 && net.minecraftforge.event.ForgeEventFactory.canLivingConvert(this, EntityType.field_200725_aD, (timer) -> this.field_204708_bE = timer)) {
                this.func_207302_dI();
             }
          } else if (this.func_204703_dA()) {
@@ -248,6 +249,7 @@
       if (zombieentity != null) {
          zombieentity.func_207304_a(zombieentity.field_70170_p.func_175649_E(zombieentity.func_233580_cy_()).func_180170_c());
          zombieentity.func_146070_a(zombieentity.func_204900_dz() && this.func_146072_bX());
+         net.minecraftforge.event.ForgeEventFactory.onLivingConvert(this, zombieentity);
       }
 
    }
@@ -268,12 +270,16 @@
             livingentity = (LivingEntity)p_70097_1_.func_76346_g();
          }
 
-         if (livingentity != null && this.field_70170_p.func_175659_aa() == Difficulty.HARD && (double)this.field_70146_Z.nextFloat() < this.func_233637_b_(Attributes.field_233829_l_) && this.field_70170_p.func_82736_K().func_223586_b(GameRules.field_223601_d)) {
             int i = MathHelper.func_76128_c(this.func_226277_ct_());
             int j = MathHelper.func_76128_c(this.func_226278_cu_());
             int k = MathHelper.func_76128_c(this.func_226281_cx_());
-            ZombieEntity zombieentity = new ZombieEntity(this.field_70170_p);
 
+         net.minecraftforge.event.entity.living.ZombieEvent.SummonAidEvent event = net.minecraftforge.event.ForgeEventFactory.fireZombieSummonAid(this, field_70170_p, i, j, k, livingentity, this.func_110148_a(Attributes.field_233829_l_).func_111126_e());
+         if (event.getResult() == net.minecraftforge.eventbus.api.Event.Result.DENY) return true;
+         if (event.getResult() == net.minecraftforge.eventbus.api.Event.Result.ALLOW  ||
+            livingentity != null && this.field_70170_p.func_175659_aa() == Difficulty.HARD && (double)this.field_70146_Z.nextFloat() < this.func_110148_a(Attributes.field_233829_l_).func_111126_e() && this.field_70170_p.func_82736_K().func_223586_b(GameRules.field_223601_d)) {
+            ZombieEntity zombieentity = event.getCustomSummonedAid() != null && event.getResult() == net.minecraftforge.eventbus.api.Event.Result.ALLOW ? event.getCustomSummonedAid() : EntityType.field_200725_aD.func_200721_a(this.field_70170_p);
+
             for(int l = 0; l < 50; ++l) {
                int i1 = i + MathHelper.func_76136_a(this.field_70146_Z, 7, 40) * MathHelper.func_76136_a(this.field_70146_Z, -1, 1);
                int j1 = j + MathHelper.func_76136_a(this.field_70146_Z, 7, 40) * MathHelper.func_76136_a(this.field_70146_Z, -1, 1);
@@ -284,6 +290,7 @@
                if (WorldEntitySpawner.func_209382_a(entityspawnplacementregistry$placementtype, this.field_70170_p, blockpos, entitytype) && EntitySpawnPlacementRegistry.func_223515_a(entitytype, serverworld, SpawnReason.REINFORCEMENT, blockpos, this.field_70170_p.field_73012_v)) {
                   zombieentity.func_70107_b((double)i1, (double)j1, (double)k1);
                   if (!this.field_70170_p.func_217358_a((double)i1, (double)j1, (double)k1, 7.0D) && this.field_70170_p.func_226668_i_(zombieentity) && this.field_70170_p.func_226669_j_(zombieentity) && !this.field_70170_p.func_72953_d(zombieentity.func_174813_aQ())) {
+                     if (livingentity != null)
                      zombieentity.func_70624_b(livingentity);
                      zombieentity.func_213386_a(serverworld, this.field_70170_p.func_175649_E(zombieentity.func_233580_cy_()), SpawnReason.REINFORCEMENT, (ILivingEntityData)null, (CompoundNBT)null);
                      serverworld.func_242417_l(zombieentity);
@@ -369,7 +376,7 @@
 
    public void func_241847_a(ServerWorld p_241847_1_, LivingEntity p_241847_2_) {
       super.func_241847_a(p_241847_1_, p_241847_2_);
-      if ((p_241847_1_.func_175659_aa() == Difficulty.NORMAL || p_241847_1_.func_175659_aa() == Difficulty.HARD) && p_241847_2_ instanceof VillagerEntity) {
+      if ((p_241847_1_.func_175659_aa() == Difficulty.NORMAL || p_241847_1_.func_175659_aa() == Difficulty.HARD) && p_241847_2_ instanceof VillagerEntity && net.minecraftforge.event.ForgeEventFactory.canLivingConvert(p_241847_2_, EntityType.field_200727_aF, (timer) -> {})) {
          if (p_241847_1_.func_175659_aa() != Difficulty.HARD && this.field_70146_Z.nextBoolean()) {
             return;
          }
@@ -381,6 +388,7 @@
          zombievillagerentity.func_223727_a(villagerentity.func_223722_es().func_234058_a_(NBTDynamicOps.field_210820_a).getValue());
          zombievillagerentity.func_213790_g(villagerentity.func_213706_dY().func_222199_a());
          zombievillagerentity.func_213789_a(villagerentity.func_213708_dV());
+         net.minecraftforge.event.ForgeEventFactory.onLivingConvert(p_241847_2_, zombievillagerentity);
          if (!this.func_174814_R()) {
             p_241847_1_.func_217378_a((PlayerEntity)null, 1026, this.func_233580_cy_(), 0);
          }
@@ -448,7 +456,7 @@
    }
 
    public static boolean func_241399_a_(Random p_241399_0_) {
-      return p_241399_0_.nextFloat() < 0.05F;
+      return p_241399_0_.nextFloat() < net.minecraftforge.common.ForgeConfig.SERVER.zombieBabyChance.get();
    }
 
    protected void func_207304_a(float p_207304_1_) {
@@ -468,7 +476,7 @@
    }
 
    protected void func_230291_eT_() {
-      this.func_110148_a(Attributes.field_233829_l_).func_111128_a(this.field_70146_Z.nextDouble() * (double)0.1F);
+      this.func_110148_a(Attributes.field_233829_l_).func_111128_a(this.field_70146_Z.nextDouble() * net.minecraftforge.common.ForgeConfig.SERVER.zombieBaseSummonChance.get());
    }
 
    public double func_70033_W() {