all things are possible with the warp.
as 8 spider pointed out. if it can spit out daemon princes, astral spectres, and all other nasties i'm sure out can spit out one nasty ass dragon.
even a mechanical one would be a very tough customer, break out the heavy weapons, one mean ambush and lots of sucker punches.
the Legio Cybernetica is described as such:
...The Legio Cybernetica is one of the oldest parts of the Adeptus Mechanicus. Its records stretch back almost unbroken to the very first days of the Imperium. The Legio has a long history, and its memeber regard themselves as an elite.
The Legio is responsible for the care and construction of all Robots throughout the Imperium. Robots mayb be used by all kinds of Army and Marine forces, but they are always under the Legios final control. Indeed, many of the Adepts of the Legio are killed while taking part in military operations. The legio continues to serve, aware of its value as a fighting force, even in the face of 90% plus casualties.
The Legio is organised into several thousand cohorts, although only a percentage of these is ever active at any one time. Ech cohort is in turn organised into maniples of three, four or five Robots plus a Legio tch adept. The number of maniples in a cohort varies, but is rarely more than 100....Battles involving more than 4 or 5 maniples are rare...
Each maniple is a virtually self contained unit. The typically four units are managed by a single tech adept. He has little more to do than give the Robot's their final programs and then monitor their progress. He is also charged with making sure that a damaged Robot is destroyed as quickly as possible. Each Robot carries a self destruct system hich can be detonated by remote control should its programming fail in some way....It is said that a tech adept of the Legio is worth his weight in spares and can repair virutally any item of Imperial equipment.
The Inquisition has also put cohorts of the Legio to good use. Robots by their very natures, utterly incorruptible. Their preprogrammed, non biological natures make them the perfect troops to use against mutants and other contaminated populations. The terror value of Robots when used against unprepared and underarmed troops has not gone unnoticed by the Inquisition. This , combined with their unflagging loyalty, has made them valued additions to the Inquisitions armoury. Cohorts attached to the Inquisition are usually staffed by technican-Inquisitors rather than Legio adepts. Robots may be pure and incorruptible; men are not.
Like a Dreadnought,a Robot is the product of the many advanced technologies which have produced its armoured shell, its artificial muscle and nerve bundles, its cortex, power plant, weapons control systems, equipment interfaces and cortex.
What makes a Robot different from an occupied Dreadnought suit is its cortex. This is an artficial brain of sorts, which is constructed from artificial proteins and enzymes. This cortex is imprinted with simple maintenance and movement routines - a rudimentary mind....these firmware rountines (so called because they are 'wired in' software) are often patterned after living creatures, and a Robot may develop a dog-like devotion to its technician master.
Before a battle the firmware rou tines are overlayed and replaced by the Robots combat wetware (ie the software of a protein computer). This new cortex program, which can be changed for every battle, defines, for example, how and when the robot os to fire its weapons or detonate its self destruct charges.
Each piece of wetware is aheld in a small slice of bioplastic, about the same size as a credit card. Many warrriors take these from 'dead' robots believeing that they hold the soul and courage of the Robot.
these excerpts were taken from White Dwarf Compendium 1989.
hopefully this may give some of you ideas and expand your games a lil bit.
cheers