Syd - Is it a Jewish robot/mech? What armaments does it have? Is Jacob the pilot or remote-controller?
Syd is a golem, which is more less a magic powered robot. It (or he?) doesn't really have any armaments, but it does have super strength and durability (and maybe fire a beam of light from it's mouth, I'm not sure).
Jacob is the pilot, but in an unusual way. Y'see, Jacob turns into a spirit or something and possesses or merges with Syd, essentially becoming him. It should be noted that Jacob cannot speak while he is merged with Syd, he can only growl and roar.
Is that what you needed to know?