Forum adverts like this one are shown to any user who is not logged in. Join us by filling out a tiny 3 field form and you will get your own, free, dakka user account which gives a good range of benefits to you: No adverts like this in the forums anymore. Times and dates in your local timezone. Full tracking of what you have read so you can skip to your first unread post, easily see what has changed since you last logged in, and easily see what is new at a glance. Email notifications for threads you want to watch closely. Being a part of the oldest wargaming community on the net. If you are already a member then feel free to login now.

Many chaos space marines do not worship the chaos gods, or even dismiss and hate them, but only regard them as weapons and tools.

Then is there such a chaos space marines warband who does not worship the chaos gods, but dedicated to the Dark Mechanicum and venerating the Omnissiah?

And if HOMEBREW such warband, these CSMs may have fewer chaos elements and more mechanicum aesthetics.they would have and deploy large number of forbidden technologies that are considered heretek in the Impreium (for example, battle automata units of 30K era), and their HQ units may combine the options of Chaoslord and Mechanicum Magos(30K),those HQ character can load out ton of strange and shinny weapon of 30K era.

I wouldn't know. But that's a really cool premise.

Iron Warrior's sort of come to mind, but they always saw Chaos as a means to an end, and probably don't put much faith in anything other then their bolters or artillery pieces.

Probably, yeah. They might have some attributes in common with the Iron Warriors.

The Space Marines have a few chapters that do or borderline venerate the Omnissiah so there's no reason why not for Chaos as far as I can see.

Take Chaos Space Marines, lords discordant, warpsmiths, daemon engines, battle automata/abominable intelligence, HQ character with the Spitespitter relic, etc.

You could probably take any Chaos Legion's special rules if you think they fit well enough. Maybe they are really on the religion-y side of things and you use Word Bearers, or maybe they are all cybernetically enhanced and use Creations of Bile, you could probably make up a story reason for many things.

Imagine this HQ character: (a chaos Lord riding on his abeyant)

he is not a dreadnought, but easy to be misregards as a dreadnought of unknown pattern, or a huge battle automata.

Just Like a senior Magos of Mechanicum, most of his body has been replaced by machine - they believe that flesh is weak, and machine is strength - so that it is difficult to identify his flesh part.

In fact, his abeyant is a part of his body, armor and weapons. He is no longer regarded as an "infantry" but a "monstrous creature", just like an ordinary daemon prince is not an "infantry" but a "monstrous creature". He is equipped with weapons that are far more than ordinary chaoslords can carry, and many of them are lost forbidden technologies - terrible destruction machine in both distant and close combat, and can repair damaged his war machines and robots.

The setting is intentionally designed to leave lots of room for pretty much anything to exist in it somewhere. I'm not aware of any canonical warbands with especially close ties to the dark mechanicus, but it definitely sounds like something that could exist.

As ph34r points out, you can probably use just about any faction's rules to represent them depending on what aspects you want to lean into. I'd also point out that not everything has to be a space marine; you could just use the normal mechanicus rules and fluff your rules/weapons as being more chaos-y if you'd like.

Imagine this HQ character: (a chaos Lord riding on his abeyant)

he is not a dreadnought, but easy to be misregards as a dreadnought of unknown pattern, or a huge battle automata.

Just Like a senior Magos of Mechanicum, most of his body has been replaced by machine - they believe that flesh is weak, and machine is strength - so that it is difficult to identify his flesh part.

In fact, his abeyant is a part of his body, armor and weapons. He is no longer regarded as an "infantry" but a "monstrous creature", just like an ordinary daemon prince is not an "infantry" but a "monstrous creature". He is equipped with weapons that are far more than ordinary chaoslords can carry, and many of them are lost forbidden technologies - terrible destruction machine in both distant and close combat, and can repair damaged his war machines and robots.

Sure. Sounds like a good fit for the Lord Discordant or Daemon Prince rules with a snazzy converted model.

In canon it is the Iron Warriors that are the closest to this.

As others have said you don't have to use their rules but they do have a lot of stuff that works specifically with Daemon Engine and Machine Spirit models so I think it would fit.

One thing you could do that I have seen others running Iron Warriors list do is run a ‘Iron Circle’ Domitar-Ferrum Class Battle-automata as a Daemon Prince. They worked better when the Daemon Prince could take a Warp Bolter but it still works.

In the first black legion novel their is an iron warriors grand company that essentially falls in on a dark mechanicus world in the eye. They act as the enforcers for it and take their orders from the magos running it.