Question: What exactly IS 'The Catalyst'? Are there any theories?
Question: Why did Arthur Petrelli steal Peter's powers? Was it because he simply wanted them, to add to his collection as it were, or because he saw him as a threat?
Chosen answer: Both, really. Peter is undoubtedly powerful enough to cause a serious problem, so nullifying him makes sense on a tactical level. It's also understandable that a power thief like Arthur could hardly resist the temptation to obtain so many new powers in one go when he's used to stealing them one at a time.
Question: What are the limits of Sylar's telekinesis? Can he use use it to fly perhaps?
Chosen answer: He's certainly been shown to use it to levitate, so full flight is probably within his capabilities. His exact limits are unknown, but are undoubtedly pretty high - he throws a police van around with no obvious effort towards the end of season one and has shown himself to be skilled enough to manipulate many different objects at once, as when he used the glass fragments against the invisible Peter Petrelli.
Question: Any body know what type of phone Claire Bennett has. It's the pink mobile.
Question: If Adam Monroe hadn't have had his power absorbed by Arthur Petrelli and subsequently died, would he have died anyway by the time of the eclipse?
Chosen answer: Probably not - he survived through earlier eclipses unscathed. The eclipse appears to negate powers, but doesn't appear to actually remove them, as they all return once the eclipse finished. Arthur's ability, on the other hand, forcibly strips powers away from people, which is something of a different thing. Adam can apparently survive a temporary negation, but having his ability removed completely resulted in his death.
Question: How is Sylar able to resist Eden's power of persuasion, when she tells him to kill himself?
Chosen answer: We don't know the extent of Sylar's powers. It's possible he's taken powers from someone that allows him to resist Eden, or maybe his willpower alone is strong enough.
Question: How exactly does Peter Petrelli acquire that pretty nifty looking facial scar, even though he's absorbed regeneration? Is it even explained?
Chosen answer: (POSSIBLE SPOILER WARNING) Peter lost his regeneration ability and can now only possess one power at a time. He may yet get the scar.
Wait but that future scene was after the future was changed.?
Answer: You are talking about two different Peter's. The "scarred" peter never met Claire until Hiro told him to do so.
Chosen answer: It's never explained. There are probably many fan theories, but none can currently be considered to hold any weight. With the catalyst lost when Arthur died (something confirmed by the writers), it is unlikely that the concept will be revisited at any point and thus the exact nature of the catalyst must remain a mystery.
Tailkinker ★