[Kaiba never missed an opportunity to tout his merits, which he held in much higher regard than his current companion. It was likely another discrepancy in timelines, as this sort of technology was just beginning to be dispersed among the populace. Also, gaming was a profitable and major industry in his own dimension- the ability to duel expertly was a valuable skill.]

[He was quiet for a few moments, as he just gave Add a hard stare. What was with that laugh?]

If you're going to launch into a pretentious monologue I'd prefer it if you either kept it to yourself or make it quick and succinct.. [Since the laughter had seemed nefarious in it's delivery.]

These pokéballs shouldn't be functional- they seem to be based on theoretical physics and subatomic restructuring. [..and yet.] Matter is being converted into light and then stored inside this containment unit, but that wouldn't account for the loss of mass or why creatures of any size and shape could be encapsulated within it. [Look- there's many potential hypotheses here]