Oh yeah, I have a feeling Alloy’s creator is a big deal you wouldn’t want to show what they look like or even give them a name right away which is why it would make sense to build them up overtime first like introduce a former helper or associate and some of their other inventions, maybe a big character arc for Alloy could be to find his creator so that he could learn more about himself. Kinda like how Ben 10 did with Xylene, she was introduced as an associate of Azmuth’s who was appointed to deliver the Omnitrix to Max but they never even said his name or anything, setting the stage for the Azmuth character. This black market character I came up with has a similar role but as a villain who has no qualms with selling his former associate/boss’s stuff.