Adding a hat to a Minion Do you want your minion to have a cool hat?   Read on Preparing our files There are a few different ways to get files from the game. For this guide lets use Penumbra's  Import from Screen  combined with model export (textools can also accomplish this). We are going to put the "Calfskin Rider's Cap" onto the "Meercat" minion. Equip the hat on your character and summon the minion. Then in Penumbra's Mods tab, make a new blank mod (call it whatever you like) and open  Advanced Settings . Open the  Import from Screen  tab, click  Refresh Character List  at the top left. Then click the  Add a copy...  button at the far right for the "Calfskin Rider's Cap"  mdl  on your character and the minion body on the Meerkat. Now we will export these model files so that we can edit them in blender. Go to the Models tab of Advanced Editing (the window that we already have open). For each model, select it in the dropdown, expand the  Import/Export  tab, and click  Export to glTF . Put these files somewhere you will remember cause we will need them in the next step  (You may want to put them in a folder as they will also export all the textures for the model) Blender! (Note: This guide is using Blender version 3.6.2) Importing the files Open blender and clear out the tree navigation to the right. Now we will import our models. We will first import  m8320b0001.gltf  then we will import  c0801e6116_met.gltf . Go to  File -> Import -> glTF 2.0  and find each model and import them. You should have some items on the right panel now and if you expand them they should look like the following.  mesh 0.002 ,  mesh 1.002 , and  mesh 2.002  should be the different level of detail models for the hat as long as blender gave you the same names on import. We are going to use  mesh 0.002 . Click on  mesh 0.002 , hold shift drag it to  Armature  on the right panel. Then rename it to  mesh 3.0 . Select  mesh 3.0  and change its armature modifier to point to  Armature  instead of  Armature.001 . Now right click on  Armature.001  and select  Delete Hierarchy Your setup should now look like this. Moving the hat Click on the hat mesh in the 3d space and select  Object -> Set Origin -> Origin to Geometry . Now we will use the move and rotate tools to move the hat to the minions head. This part is not an exact science, so use the gif below as a guide and move the head to a position you like. Adding weights Now we need to add weights to our hat otherwise it will not move with the minions head. We are getting off a little easy with this mod as we only need to give the hat weights for one bone to make it look correct. Weights can be much more complicated for other clothing items, but we will keep it basic in this guide. First lets figure out the bone that controls the minions head. In the gif below we can see that the bone for the head is  j_head . Now lets add weights for the hat to that bone. Switch back to object mode in the top left dropdown. Then select  mesh 3.0 , open the data panel (green triangle looking one), and delete all current vertex groups. Add a new group called  j_head  and switch to  Weight Paint  mode. Ensure your weight slider is set to  1.0 . Switch to the gradient tool, and make the whole hat red. Verify! Now we can switch back to our Armature then in pose mode we can verify the hat is attached to the head bone now. Export Now we can export for the game. We will be exporting as a  glTF . There are a few settings we need to change for the export as well. Specifically we will enable  Tangents  and  Custom Properties  as they are not included by default. Please see the  Penumbra Model Info  if you are having issues with this. Import back into game Before we import the updated minion model, we will need to grab the hat material and redirect it to the minions folder in game so that the new mesh can use it. Lets use the  Import from Screen  tab in  Advanced Settings  to import this material from our character, then update the file redirect to put it in the minions material folder. We can also delete the hat  mdl  file from our modpack while we are at it as it is no longer needed. Make sure to remove the file redirect then click  Apply Changes  before deleting the file or you will cause issues with your hat in game. Now lets import our new minion. Go back to the model tab, select the minion model, select  import from glTF  and find your minion model you exported from blender. (Do not check the checkboxes above the import button, we should not need them.) Click  Save to File  after import is done. All Done! That's it. Enable your modpack and redraw your minion and you should see the hat