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Also, just from a cursory glance at the page, General Hazel is one of the main characters, and main characters cannot be an Ensemble Dark Horse by definition.
The rule of thumb I use on ZC Es is to cover up the trope name and see if the description clearly makes sense without trope-name context. Works for me, anyway.

I'll admit, I've been here a while and I still struggle to grok the Zero-Content Examples policy. I've seen quite a few things commented out as ZCE instances that do not look like zero context IMO. But on the YMMV page for Psycho Waluigi, there's an entry written like this:
That's it. Nothing on why she's an Ensemble Dark Horse, just the trope and the character. Like… that hardly tells me anything… if anything I've seen around TV Tropes is a "Zero Context Example", it's that. Am I the only one who sees it?