With regular Vtubers, Like these people, th.jpg
Their character is drawn, edited, and Rendered to look like their 3d.
They arenโt actually 3d but they are in layers to look like they are.
With Other Vtubers/Vroid user. they have characters what look more like this, th.jpg
Their more 3d, have more room to move, and look more realistic as they can turn from side to side without looking weird.
Mine from the side for example, e5e074f0-0242-462e-8eed-83dfe701cd92-image.png
They are molded with a software that makes them like clay and less like a drawing.
So it looks more realistic in a way and itโs harder and more time consuming than 2d Vtubing.