Can someone explain to me what is happening and why?

I imported a model and everything that could go wrong did. There was only vertices when i imported it but was able to fix that. Now i have all these other problems with the tail that need answers. The tail is only connected to one bone and when i move said bone the texture gets completely fractured, also all the other bones i have do nothing to move the model.

Just for reference this is what the tail is supposed to look like.

Looks like Weight Paint related problem.

You should verify the state of each Deform Bone’s Vertex Group from the 'Mixed’ Pose/Weight Paint Mode.

But, alongside that, also, make sure the organic related Mesh Objects (the parts of the Body supposed to employ Armature Modifier) have got an actual Armature Modifier and Targeting the Armature Object, otherwise, the Skeleton’s Deform Bones won’t provide any Influence to such Meshes.

If the Weights seem visually accurate, but the Deforms are still messy, then, additional information will be required.

I was able to get all the bones to connect but now its separating the layers of mesh that make it have the flame effect whenever i move it

:point_up_2: forgot to press reply lol

Ok, so at least there is apparent progress. But I don’t understand what are those floating Mesh Islands.

It’s probably Rogue Weights. If that’s the case, you’ll hardly find them without assessing techniques, of checking from a suspicious Active Vertex Selection, the Vertex Groups which might be having Weight Influence on it.

Sample Group Operation:

Vertex Weights Panel:

If that’s not Rogue Weights, coming from an Imported Model which probably doesn’t possess Object Modifiers (except for Armature Modifier maybe), if it’s not disrupted Shape Keys, I don’t know what else could be.