Glitch is, indeed, that sort of inventor-genius. Or rather (as with most things) he used to be that particular sort. Meals? Sleep? There was a time when Ambrose would from time to time forego both. Now though...

It takes a couple random noises to half get his attention, but the skylight hinges' faint protest makes him look up to blink owlishly with a puzzled frown.

Selina? Could be. Maddy? Also could be but illogical. He's curious and just keeps himself from calling out to ask who's there. He does step away from the table, putting his pencil down gently and walking further into the shop. Catwalks, gantries, ladders, beams, dust, light and shadow. Can he see movement? Is he looking in the right direction?