A lot of characters in kids’ movies are filler.
I love Herbie and Yukon Cornelius, but what do they have to do with Rudolph the Red Nosed Reindeer? I guess if the story just stuck to the song, it would be a few minutes long. You can’t really blame the writer for needing to pad the story out for the full 22 minutes.
The mice in Cinderella are cute, but they really only serve as someone for Cinderella to talk to. When they make her dress, it’s torn apart. The only difference they make, story-wise, is they steal a key from the wicked stepmother.
The list goes on and on. Supporting characters are supposed to support. But most supporting characters in kids’ movies just serve as comic relief, which is weird, because they are often already a comedy. A movie like Beauty and the Beast gets it right, so I could argue that the newer movies have a sense of this.