How can I make my custom model mob wear armour with armour texture.

This will only work with some biped textures and custom Zombie textures, else you will have to make a custom 3D Model and add the texture to the custom moddel!

your custom entity must be using the standard biped model.

create your custom biped armor.

when defining your custom entity, on the 2nd page there's an option to put Equipment on your entity. put your custom armor in those slots.

do you mean the texture or model? if you mean the model, mcreator has it built-in, or you can get it from blockbench. if you want a zombie texture, you can extract it from vanilla minecraft or search and download one from the web

The zombie model was removed from MCreator, that's why you can't find it. To add visibile armor to mobs with custom model you would probably have to code.

You could make the mob biped, but you would have to resize the texture of the mob (just switch from 64x64 to 64x32) and it would no longer move the arms like a zombie

Or use blockbench download the CEM Model Loader and load the model

Then download it as .Java and Import it to MCreator 

Now you should be able to give it armor or a Sword!

Wait, GhostFN, hold on to that last part please. How do I make my entities with custom model render the armour they're wearing and the items they're holding?