Django, by default, orders the models in admin alphabetically. So the order of models in Eventadmin is Epic, EventHero, EventVillain, Event
Instead you want the order to be
  • EventHero, EventVillain, Epic then event.
The template used to render the admin index page is admin/index.html and the view function isModelAdmin.index.
def index(self, request, extra_context=None):
    """
    Display the main admin index page, which lists all of the installed
    apps that have been registered in this site.
    """
    app_list = self.get_app_list(request)
    context = {
        **self.each_context(request),
        'title': self.index_title,
        'app_list': app_list,
        **(extra_context or {}),
    }

    request.current_app = self.name

    return TemplateResponse(request, self.index_template or
        'admin/index.html', context)
The method get_app_list, set the order of the models.:
def get_app_list(self, request):
    """
    Return a sorted list of all the installed apps that have been
    registered in this site.
    """
    app_dict = self._build_app_dict(request)

    # Sort the apps alphabetically.
    app_list = sorted(app_dict.values(), key=lambda x: x['name'].lower())

    # Sort the models alphabetically within each app.
    for app in app_list:
        app['models'].sort(key=lambda x: x['name'])

    return app_list
So to set the order we override get_app_list as:
class EventAdminSite(AdminSite):
    def get_app_list(self, request):
        """
        Return a sorted list of all the installed apps that have been
        registered in this site.
        """
        ordering = {
            "Event heros": 1,
            "Event villains": 2,
            "Epics": 3,
            "Events": 4
        }
        app_dict = self._build_app_dict(request)
        # a.sort(key=lambda x: b.index(x[0]))
        # Sort the apps alphabetically.
        app_list = sorted(app_dict.values(), key=lambda x: x['name'].lower())

        # Sort the models alphabetically within each app.
        for app in app_list:
            app['models'].sort(key=lambda x: ordering[x['name']])

        return app_list
The code app['models'].sort(key=lambda x: ordering[x['name']]) sets the fixed ordering. Your app now looks like this.
_images/ordering.png