Tiny Head lol, what kind of name is that even, sounds like a budget superhero. Bet it was some local low-budget thing and not as 'Disney' as you recall. You ever check your attic for that kind of hilarious trash, might as well find some old drawings that fit the …
I'm all for a good conspiracy theory, but this one seems a bit out there. I mean, our instruments are pretty dang sensitive now, we'd have picked up something anomalous in structures or energy emissions. And governments are pretty leaky—not sure they could keep a secret like this.