Koko - When it comes to solving detective cases, his imagination never fails, and he always, infallibly, has a brilliant idea. The only things that can distract him are the fragrance of pancakes and his sister Marica (though he'd never admit it).

Božo - He is ready to do anything to help his friends. He adores pigeons. He doesn't like running and other physical activities, and he can't stand it when his mum puts a band-aid on his glasses in the morning.

Žohar - Unlike Tomo, Žohar always knows how to stay awake at night. His favourite hobby is fishing, and he detests diving head first. If you really want to push his buttons, call him by his real name (Vinko).

Crni - Unlike Žohar, Crni can impress the gang with his diving head first. Plus, he is a real expert in hitting various targets with his slingshot. Those who are not blinded by his many talents might notice that he is a bit rush and reckless.

Tomo - Of all the boys from the Green Hill, Tomo is the absolute champion in watermelon seeds spitting. He is a loyal friend, and always willing to step in when his mates are organizing a night watch. The only problem is that he cannot stay awake. He himself is not aware of his courage.

Nina - Nina is the youngest member of the female part of the Green Hill gang. She wants to grow up fast to be like her sister Emica. She is always happy and laughing. And she does not like scary tales about ghosts.

Emica - Emica knows how to get what she wants. Her secret weapon is her smile, and her biggest weaknesses are Ivo and her incapability to keep a secret.

Marica - Marica is a true little rascal. She is dotty and quick-witted. Her curiosity has no limits. When she appears with her plush bunny and her flower wreath on her head, your heart will melt. Her soft spots are only her elder brother Koko and Emica's pink bike.