Inventa-fixers often take on apprentices and so can be of any age, young or old. Indeed, younger inventa-fixers are often in high demand as they can repair parts of the fablehearths that are out of the reach of older members of the guild.

Inventafixers can be fierce fighters and have been known to drive off a pack of sabre wolves with nothing but a screwdriver and a rolled-up sleeve. They are, however, notoriously tight-fisted, unwilling to spend a single penny on anything that could be improvised instead out of a rubber band, an empty bottle and an old bicycle wheel.

They do not tend to get on well with the story shamans, who they believe to be lazy sit-abouts, always getting in the way with their meditation, yogic humming and crystal-gazing when there are more practical problems to be solved.