I mean, I thought that was the obvious conclusion we were supposed to draw. That they spent an entire episode on the nihilistic human with the huge eyes who was basically the King of the NGL, who gets taken by the ants. And pretty much every other character of importance is being revealed to have been a member of Gyro's gang.
Remember that they've already stated that Youpi had NO humans in him. He was made entirely of magic beasts. So of course he wouldn't have any human memories.
Yeesh, thanks for reminding me how terrible Togashi's art is...
Was that scene even in the anime? I don't remember it if it was. But yeah, I guess that makes them two separate characters.
It also makes it seem like Ant Gyro is going to be an important antagonist later in the series.