Combat profile
For Minecraft 26.3 / NeoForge, wave base values and supported behavior can be changed per registry entry: see health, damage and base armor and mob abilities. Tier, size and wave scaling still apply.
Values describe the default variant before wave scaling, equipment and configuration overrides. Its health is twice the configured Tier 2 Zombie health. Unlike the Armed Zombie or Zombie Brute, its defining threat is spreading fire.
Behavior and fire
Like the IM Zombie, it attacks players, Iron Golems and the Nexus. Default abilities allow mining and stair building; weapons and armor are enabled, while bridging and towering are disabled.
Once ignited, it refreshes its own fire timer every server tick. The fire does not simply expire after eight seconds: entering water extinguishes it. Sunlight can ignite it again. The default configuration does not grant fire immunity.
While burning, it places fire in air or lava-ignitable blocks within two blocks along each axis, and refreshes the fire on entities inside its hitbox expanded by 1.5 blocks in every direction. Nearby allies can be ignited too. This is continuous exposure, not a single fixed-duration hit; the fire-spreading routine has no mobGriefing check.
Waves and spawn egg
The independently configurable entity is invmod:tar_zombie. In config/invasion_mod_mobs.json, its defaults are active: true, boss: false and base cost 5, with themes ARMORED, RANGED, SIEGE, MIXED, RANDOM, RANDOMHELL and UNDEAD. Selection depends on the phase theme, budget and server configuration; it has no dedicated minimum-wave gate. See invasion modes and waves.
Use its own invmod:tar_zombie_spawn_egg in Creative, or obtain it with /give @s invmod:tar_zombie_spawn_egg when commands are permitted. The current item model uses the vanilla Zombie Spawn Egg texture. Legacy Tier 2 / flavour 2 Zombie selections resolve to this entity.
Drops
Uses the vanilla Zombie loot table, including rotten flesh and its usual conditional rare drops. It has no tar-specific item drop and does not receive the fixed wooden-sword, iron-sword or iron-chestplate bonus of the other Zombie flavours. Spawned equipment can affect loot.
Defense
Keep it away from flammable defenses and crowds. Use water to extinguish it, then fight from range; new ignition sources can restart the spread. Already placed fire must be dealt with separately. Prolonged eye-level submersion can also trigger the inherited Drowned conversion, so water does not remove the enemy outright.
Mechanics checked against the Minecraft 26.3 / NeoForge branch.