Within your custom disaster you can create custom entities and then using the summon action you can spawn them in during your disaster!
To create custom mobs you have to create another skeleton body for entities outside of the other skeleton bodies. Custom entities are completely optional and do not need to be included in your custom disaster so you can ignore this section if you don't want custom entities, this is what your YAML file should look like:
# * Your settings skeleton body with info about the disaster
settings:
# Settings info
# * Your core body for defining events and actions inside levels
core:
# Core info
# Your custom items skeleton body if you decided to create one for your disaster
items:
# Custom items
# This is your custom entities section notice how it is outside of the settings and core skeleton body
entities:
customZombie:
# * The type of vanilla mob that the entity is (refer to resources for a list of entity type names)
type: zombie
# Mobs custom name for death messages and name tag
name: '&cCustom Zombie'
# You can define equipment for your custom entity
equipment:
# You can reference your own custom items by name here or minecraft items (refer to resources for a list of item names)
# 'coolSword' is a custom item that we defined in the custom items section
mainHand: coolSword
# 'strongerShield' is a custom item that we defined in the custom items section
offHand: strongerShield
helmet: iron_helmet
chest: iron_chestplate
legs: iron_leggings
boots: iron_boots
# You can define drop chances for each equipment slot on your custom mob
dropChances:
# Drop chances for gear, 1.0 meaning will always drop and 0.0 meaning will never drop (default: 0.1)
mainHand: 1.0
offHand: 0.5
helmet: 0.1
chest: 0.1
legs: 0.1
boots: 0.1
# Health of the mob (default is mobs regular health)
health: 30.0
# Movement/fly speed
speed: 0.3
# Range it will follow targets in blocks
range: 50.0
# Knockback it deals
knockback: 1.0
# Base damage
damage: 6.0
# Resistance to knockback
resistance: 3.0
scaryMob:
type: skeleton
name: '&cCustom'
equipment:
mainHand: bow
helmet: chainmail_helmet
chest: chainmail_chestplate
legs: chainmail_leggings
boots: chainmail_boots
dropChances:
mainHand: 1.0
helmet: 0.1
chest: 0.1
legs: 0.1
boots: 0.1
health: 15.0
speed: 0.3
range: 50.0
knockback: 1.0
damage: 6.0
resistance: 3.0