Stars, as in a mass of gass dense enough to undergo fusion, are quite rare in the void sea. Usually what creatures see and call stars, is either just planar radiation coming from the deformities in a planar shell or distant planes or powerful entities that have impacted said planer shell. As for wiggling, screaming, silent stars, those could be seen as a few things depending on its origin. If it is an intraplanar entity I can not really explain it without knowing how the plane in question manipulates its essences. Extraplaner ‘silent stars’ come in three main categories.
The Void born, the escaped planar entities, and soul blobs. Void born entities are the most perplexing since Void is the essence of the mind, anything the mind could think of could be a void entity. But, that is only when speaking in hypotheticals, for anything bigger than an average fist requires a high amount of Aether, or a similar essence, to keep the Void from pulling the Void entity apart.
Escaped planar entities tend to under go mutations if they are not prepared for their escape into the Void Sea. If that entity were to have enough Aether to allow it to expand to the size of a star without dissipating, then it is likely for it to survive in a wiggling screaming form.
Soul blobs however are the most likely contender for your title of silent star. An unprotected spirit will need to either find protection or consume souls to prevent itself from dissipating. Every once and a while, in planes with low planar radiation, a spirit will consume enough souls to consume a plane. At that point, if it hadn’t already, the spirit will lose control of its mind and become a chimera of minds and forms. This soul blob’s only goal would be the consumption of more souls. Typically they can last a minimum of 1 million of your earth years before they start dissipating due to the Void. These soul blobs roam the Void Sea and are quite the threat if you are not prepared for them. Even then, the most reliable preparation is an escape plan. Soul Blobs are surrounded by a large field of random soul magic. You know of how your Sun’s magnetic field causes a lot of electric activity and corona shit. Imagine something like that but the size of your solar system and way more magical, and you have the smallest recorded soul blobs. If you were to point to a part of that blob, it would have its own mind and soul body/shape. That would constantly be in flux due to the rest of the blob. Wiggling and screaming do not give it justice, it is pure agony trapped in a uncaring ever shifting mass of agony, that consumes and consumes until it pops into multiple other blobs of agony. Even that description does not give justice to those incomprehensible abominations.
