Exactly! That was bull!
Maybe there was supposed to be some brief dialogue that hinted towards Wario which ultimately got cut.
Like one Toad telling another Toad how all of the gold was stolen by some big, scary, yellow guy who stunk of garlic...
It was supposed to be a joke because we don't normally see his eyes.
But looking back at it, it just fell flat as it really doesn't look unsettling.
So I just despoilerized it, so now you can see his smexy eyes right out in the open!
Seriously...
https://mobile.twitter.com/KirbCaptain/status/865851084031631361
You know what they say, the more the marrier!'
EDIT: this artist has NSFW content on his Twitter, so please be cautious when going to the account.