WAR DICE can be added to any roll RAW afaik, and as for the MASCOT you functionally have 1 MAX HP and your true MAX HP gets distributed amongst the rest of the party, at least that's how I interpret it.
What software are you using to make the form-fillable version? With Acrobat you can insert an image field, iirc it's in tools > prepare form.
I can't assign a portrait with the form-fillable version.