Source-checkedCreatures & NPCs

Custom Boss

by Falita · for Killing Floor 2

https://img.shields.io/static/v1?label=KF2&message=Mutator&color=blue https://img.shields.io/static/v1?label=config&message=INI%20tunable&color=orange…

23Downloads
54d agoLast updated
Steam WorkshopSource

About Custom Boss

From Steam Workshop

https://img.shields.io/static/v1?label=KF2&message=Mutator&color=blue https://img.shields.io/static/v1?label=config&message=INI%20tunable&color=orange…

Based on: DKCustomBosses https://steamcommunity.com/sharedfiles/filedetails/?id=3692681287

* Fixed Healthbar * Fixed Wave End * Improved invisible proxy behavior * Compatible with RetryXwave

Changed package/mutator name to avoid conflicts with existing DKCustomBosses installs:

?Mutator=CustomBoss.CustomBossMut[/code]

Create this fine inside the Config folder:
[b]KFCustomBoss.ini[/b]

[code][CustomBoss.CustomBossMutConfig]
ConfigVersion=1
bEnabled=True
bLogEnabled=True
ReplacementChance=1.0

BossPool=(BossPath="FalitaZed.CustomBoss1",MinWave=11,MaxWave=11,Weight=1)
BossCaptions=(ClassName="CustomBoss1",Caption="Custom boss incoming.")

BossPool=(BossPath="FalitaZed.CustomBoss2",MinWave=11,MaxWave=11,Weight=1)
BossCaptions=(ClassName="CustomBoss2",Caption="Another custom boss incoming.")

📋 Config notes:

ReplacementChance=1.0 means the vanilla boss will always be replaced. Use 0.5 for a 50% replacement chance.

BossPool adds one custom boss option. BossPath must use Package.Class format. MinWave and MaxWave control which waves the boss can appear on. Weight controls random selection chance when multiple bosses are eligible.

Example: Weight=1 and Weight=1 = CustomBoss1= 50% CustomBoss2= 50% Weight=3 and Weight=1 = CustomBoss1= 75% CustomBoss2= 25%

BossCaptions is optional. ClassName must match the class name, not the full package path.

Admin Commands:

mutate custombosslist
mutate custombossinfo

Highlights

From source data

Footprint

Rated a light load on a server.

Last update

Its author last shipped an update 54d ago.

Custom Boss on Nxeon

From our catalogue
One-click install
Supported on Nxeon Killing Floor 2 servers. We download it from Steam Workshop, place it, and restart the server.
Server load
light
Smallest plan we suggest
Killing Floor 2 — 2 GB (2 GB RAM). This follows our own load rating above, not a benchmark.
Latest build
2026-08-23, released 2026-08-23

Game versions by loader

LoaderGame versionsNewest
Workshop

From 1 recorded build of Custom Boss.

Run Custom Boss on a Killing Floor 2 server

Pick a server or deploy a new one above; it is installed in one click.

What kind of mod it is

From the catalog
Listed on Steam Workshop as “Workshop”

Creatures & NPCs

Adds or changes creatures, NPCs and how they behave.

Compatibility

Game
Killing Floor 2

Verified at the source

  • ✓Steam WorkshopOfficial listing, checked 2026-10-17Open ↗
  • ✓AuthorFalita, as published on Steam Workshop
  • ✓LicenseNot published by the sourceFree

Custom Boss, answered

Generated from the mod’s own source data.

Is it free?

Yes. Custom Boss is free to download from Steam Workshop.

How do I add it to my Nxeon server?

Use “Add to a server” on this page, or open NxLabs from your dashboard. We install it, restart your server and switch it on.

NxLabs

Run Custom Boss on a Killing Floor 2 server.

Deploy in about a minute from $5.99 a month, then add Custom Boss in one click.