Template override without custom .js file

I'm currently trying to override the default templates to allow my users to enter formatted content. I'm able to override the styles and toolbar, but not the templates. Is there a way to override the templates without having to add a new .js file or modify the existing one?

This is an example of the code I am working with. stylesSet and toolbar both work in overriding the default values, but templates and addTemplates don't work. Any help would be much appreciated.

$('#EditorName').ckeditor({
stylesSet: [
{ name: 'Test', element: 'div', attributes: {'class': 'Test'} }
],
templates: [
{
title: 'Test title',
image: 'test.png',
description: 'Test description',
html: '<div>asd</div>'
}
],
toolbar: [
['Styles', 'Format', 'Templates'],
['Bold', 'Italic', 'Strike'],
['NumberedList', 'BulletedList', '-', 'Outdent', 'Indent'],
['Link', 'Unlink', 'Anchor']
]
});