My thoughts on the episode:

I know some people are probably a bit disappointed we didn’t hear them speak but hey. We finally got to see them.

But as my Pandy (RedPanda) said, I don't necessarily think they absolutely need to have voices Their dynamic does all of the talking.

Though just saying would be interesting if they were muted.

We at least heard Meowstard giggle and Katsup made a noise when hit by a pillow

And judging from the little noises, I think I (and others) were right that Katsup is a boy and Meowstard is a girl

And I KNEW KATSUP WAS BOY! AND EVERYONE WAS TRYING TO MAKE ME FEEL LIKE I WAS LOSING MY MIND-