Kit's reaction to hearing his old nickname clearly shows he wasn't pleased by it and probably factored into his decision to give up cloud-kicking.
The commercial for "Higher for Hire" describes Baloo as the brilliant founder and owner of the company. Most fans of the original cartoon are aware that Rebecca was the true owner while Baloo was more of a bumbling employee. But considering that Kit is the current owner and suffers from Hero Worship for his father figure, it would make sense that his latest commercial would paint his papa bear in a more positive light.
Rhinokey is unusually aggressive for either a rhinoceros or a gorilla, instantly charging at the Ducks with a ferocious roar. Animal Stereotypes about rhinos and gorillas aside, his heightened aggression can also be the result of him being confused and panicked over the fusion (as suggested below).
Dewey’s wanting to become a pilot may come from out of nowhere but he has two big influences for being a pilot, Della and Launchpad. May count as Fridge heartwarming.
Him thinking flying wasn't "special" anymore may also be because he realized that the family already has two Ace Pilots, so he wouldn't be standing out if he learned how to fly.
Kit's first reaction on seeing the pirates targeting Dewey is to jump into action and slow down the kid's fall into the water, shielding him with his body. It's a brilliant Mythology Gag to when the same Sky Pirates dropped Kit out of the sky in the Talespin pilot, and Baloo saved him with flying maneuvers.
At the end of Kit's fight with Don Karnage, he uses his crowbar to push Karnage's rudder hard-over. It causes the plane to go into an autorotating stall (a rapid uncontrolled spiralling descent)... also known as a tailspin.
Fridge Horror
The Stone of What Was is a major example of this, overlapping with Nightmare Fuel. The stone's powers activate whenever any two living beings knowingly and unknowingly touch it, with horrifying results. As the animals and Sky Pirates demonstrate, that happens more often than you think.
The above lends some Fridge Horror to the Wuzzle-caricatures themselves; the Pirates are CLEARLY not happy with their horrifying new existences, so who says the animals are much more pleased? It might explain their seemingly sky-high aggression if they, too, are horrified by their new forms.
The last time we see Butterbear is when Della lets her free after she helps them defeat Sky Pirates. While this moment could be seen as a heartwarming one on the Della part, keep in mind that Butterbear is a bear. A flying bear. And while Della managed to tame her, that doesn't mean that Butterbear won't attack other funny animals if she crosses pathes with them, given how vicious she was towards Ducks and Kit before Della befriended her.
