It's just an abstract machine, placed in to add something equalist-esque looking. It's been interesting to see what people think it is since I left it so wide open ^^' I meant for it to just be a pack of some sort, not a jet pack, strength enhancer, or a companion, but I guess it could be... XD
Thanks! Oh, it's an abstract industrial pack/machine to add some sort of stylistic steampunky looking equalist technology in the piece. For it's function, it may or may not have one. Left that one open to viewers.