Seno!!

EDIT: Please read this linked post first! It’s important!

I imagine it was used as padding, like that used in ~80s jackets that had super wide, exaggerated shoulders.

Kind of, but not quite. The souls aren't given the negative energy ball Hal-G creates in the intro sequence, nor a sprinkle later on. More accurately, it appears they're resonating to its existence out of a combined, restless fury, culminating in one death dragon.

Iirc, in episode 11 BB (at least in English,) Marucho mentions Ventus is weak to Aquos as the reason why he should fight Shun instead of Runo.

In Bakugan (videogame), aquos and ventus have no correlation. Instead, aquos and pyrus are less effective on eachother's stages (more effective on home stage,) and the same is true of ventus and subterra.

In DoTC, a game that has a functioning weakness-strength system that isn't dependent on stage, Aquos is instead weak to Ventus, dealing less damage against them and taking more damage from them.

Death: easy to understand what the end result is, morbid, a definite end

Whilst I do think Vestroia would fuse in the same way it did with the Naga'd Silent Core, and some bakugan would go beserk all the same, this does change things. Monumentally, in some cases.

For one, it throws the Silent Core to Earth instead, and theoretically makes Masquerade either a protagonist, or a well intentioned antagonist (unclear if the doom card, which sends bakugan to the doom dimension to grow Hydranoid's/Naga's power, would be used by him.)

(Very theoretically this would lead to an "Everyone except Masquerade have doom cards, and it's treated like if ygo dm gave everyone millenium items to play shadow games with. Also casuals don't really use them" situation, which frightens me.)

This change would also cause Joe's death, because the inverse (the infinity core is thrown to Earth) is what healed him of his illness.

It additionally means that whoever has Wavern can theoretically use her to brainwash people (the Silent Core's powers lie within control after all.) This generally (it could be Dan only because of Drago, but that doesn't mean much when Wavern isn't pyrus) means the Battle Brawlers; a 14 year old, a 13 year old (the one I least trust with the power of mind control), three 12 year olds, and an 11 year old.

I took this to mean the attribute category, rather than the species (since they appear to be Dragonoid off-shoots.)

The white ones, ashen ones, attributeless, what have you, are the bakugan equivalent of sun-bleached. They do have an attribute leaning, but they don't look the part at all.

Any white ones pre Dragonoid Core got absorbed into Vestroia (the planet.) This does not prevent them from appearing mid botched evolution though.

Their forms are generally weak, and have a rough time evolving because they're prone to just. exploding.

Some bakugan call them ghosts. It's also considered bad luck to meet a white one as a result, because the most infamous was directly related to the doom dimension.

Very easily influenced by Trap Bakugan, given their capability to change the attribute of their allies. Some are weaker than Trap Bakugan in terms of G Power.

Some white ones get absorbed by their closest friends, on purpose no less. Typically they act as an addition to the G Power pool a bakugan has, or even to strengthen their friend's senses.

(Answer uses context as discussed with Negative Energy Motes. Sorry if this wasn't to do with that.)

I'm not surprised it disappears with her, given it is assumedly a parasite. It's attached in a roundabout way.

Thankfully he's too strong (more specific: the urge to keep the mask is too strong) for Alice to manage that.

Dropping it works, depending on the material.

If the mote's control is weak enough, you'll be able to smash it with a hammer. Motes with more control do actively make their host take care of the mask, ensuring it's not damaged (beyond damages mid battle, of course. It's harder to prevent that.)

Shattering the mask makes the mote either hibernate (large piece of the mask is still intact), or inert (shattered into tiny pieces). Putting a hibernating mote back together wakes it up, whereas an inert mote stays inert - you can wear it, and appear completely different, but you won't be controlled into being someone completely different.

Healing someone using an influx of positive energy, a la Wavern healing Joe, doesn't exactly destroy the mote, as much as detach it from the "healed" host and forces it to hibernate. If the mote was later transferred to another viable host, it'd wake up again and continue as before, albeit with someone else.