Not bad, but not brilliant.
I like this series and I think it can really go a long way. The main thing is that you're going to have to get the balance of the volumes from the various voice tracks balanced out. One minute, it's really quiet and a little muffled, when suddenly it's a really crisp, really loud scream, which has me reaching for the volume control once again, to turn it down to a more manageable level. Some of your voice actors seem to have better equipment and software than others. It's a shame, but you need balance, even if it's done digitally, before splicing the sounds with the movie itself.
The plot is decent and it details a day in the life, yet also leaves us with something for the next episodes, in the form of the call back gag. The mouse need not be in every episode, but you might get Yoshi run off at an awkward moment, chasing after the mouse, for example. A nice balance of characters has been presented, but in the titles, I'd throw all of the icons out at the same time, to save time and space on the piece, giving a more compact and efficient title sequence.
You're looking good, but with a few more changes, things could be better - moving more than one sprite in different directions at the same time will really help, if you do it more.
[Review Request Club]