The whole cast of Whose World are the main characters, so here we go!
Jordan: Anxious, gullible, selfless, innocent.
Astrid: Sarcastic, cool, softie, logical.
Mae: Selfish, self-centered, narcissistic, egotistical.
June: Gamer, self-conscious, imaginative, kindhearted.
Iris: Weird, silly, loving, maternal.
Chloe (The bunny!): Needy, playful, intelligent, adorable.
Hope I did them justice. XD Haha.