Looks very good for a custom model, it gives off that season 1 vibe to me. Would it be possible to make the rest of the crew and add in voicelines for them (this one too)?

Amazing render and mod! If you're looking for original voice line recordings, I actually do a SpongeBob impression, if you'd be interested :)

Not necessarily as finished or as custom. I have a Boog (FBCC) model recreation but it's unfinished. No torn sleeves. I also have a model of Power Hour Timmy Turner but that's also unfinished due to a lack of facial controls.
I do have a Professor Calamitous custom i want to port but I need to bake all his material stuff for it to look nice outside of blender and I don't know how to do that.

This model is incredible, I would go as far as to say as it looks better than every official SpongeBob 3D game model. Do you have any others you've made yourself?

very appealing render