Poor bacterium, just because he just went on a dark path of being pathogenic and that he doesn't want to be intentionally like that. I'd take it more for the snowman because he's more acting like a big brat over the stupid marshmallow truck and that he doesn't deserve to ride or use because he always rudely shouts that the truck is "Mine!".

Whenever the guppies finaly gets the chance to confront the bad folks, these bad characters can get cried too easily as they're not mature even if they are a grown ups