Based on the Minecraft 26.3 / NeoForge branch. Values describe the shipped defaults; server configuration and wave scaling can change combat stats.
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.
Entity ID: invmod:jumping_zombie. Unlike the Speedy Zombie, its movement traits are high jumps and increased swimming speed, not doubled ground speed.
Movement and combat
It inherits the IM Zombie combat and Nexus-assault behavior. With the shipped defaults it can jump high obstacles, mine blocking terrain and build stairs. Weapons and armor are enabled; bridges, towers and wall climbing are disabled by default.
The swim-speed attribute is 4.0, four times the ordinary 1.0 attribute baseline. It stays a Jumping Zombie underwater: its Drowned conversion is explicitly disabled. Water alone will therefore not turn it into an IM Drowned.
Low walls and water moats are unreliable barriers against this variant. Leave room for its configured jump height when designing defenses.
Jump configuration
The shipped entry for invmod:jumping_zombie in config/invasion_mod_mobs.json has abilities.high_jumping: true and abilities.jump_height: 5. The default is a five-block obstacle height; routes still require clearance and a valid landing area.
Adjust these values through the NeoForge mod configuration’s Entities section and save the parent configuration screen. Disabling high_jumping removes the configured high-jump boost; the name alone does not force the ability on. Configure the running server for multiplayer: local client settings do not automatically update a remote server.
Spawning and waves
The dedicated egg is invmod:jumping_zombie_spawn_egg, using vanilla Zombie egg artwork. It is active and not a boss by default, with base wave cost 3. Default themes are ARMORED, RANGED, SIEGE, MIXED, RANDOM, RANDOMHELL and UNDEAD.
It can be chosen when the phase theme, budget and configuration allow it; there is no guaranteed first wave. RANDOM and RANDOMHELL apply their special cost rules. Use its egg or encounter it in invasion waves; it has no dedicated natural vanilla replacement.
Drops
Uses the vanilla Zombie loot table: Rotten Flesh, with conditional rare Iron Ingot, Carrot and Potato drops. Looting and player-kill conditions follow vanilla rules.
Rotten Flesh • vanilla ratesRelated mobs
See the base Zombie, Speedy Zombie, Fat Zombie and Jumping Spider.
The Jumping Zombie Brute combines these jumping and swimming abilities with a heavy Tier-3 charge.