Oswald

Oswald is portrayed as more aggressive, serious, and short-tempered than Mickey Mouse, though he does have a sense of fun and humor. Oswald is not welcoming towards strangers and even comes across as spiteful towards people he doesn't trust. He is very brave, but overconfident, which makes Oswald impulsive and bordering to the point that Oswald can be ignorant and ultimately fumble. Ironically, despite having the moniker of "lucky," Oswald is prone to bad luck as much as good luck, which has led him into many unfortunate situations often caused by his own overconfidence - he can only escape from these by his own good luck.

Despite his less-appealing traits, Oswald remains fundamentally good-hearted. He is motivated by a love for adventure and heroism.

He is Mickey Mouse's older brother.

Oswald is the king of Wasteland the place where forgotten Disney characters and concepts go, he was the first to be forgotten as such he looks out for the other Toons that live in this slightly warped version of Disneyland.

Oswald does care about Mickey, it's just complicated as even though he's gotten past most of his jealousy, it does sometimes rear its ugly head, he knows it's not Mickey's fault that everything happened but it's hard sometimes as he came first but only Mickey is known worldwide.