World's name: Hlenster
World's description: Hlenster is a planet focused on the balance between all the creatures living on it. The planet is cut in different seasons. Summer, Spring, Winter and Autumn which hardily change. Near Spring you can find unique birds like Phoenix and if you're lucky, you could see a Unicorn. Near the Winter and Autumn areas, you can find creatures that can servive under though condisions, such as dragons and Winter Fairies. And finally, near the Summer area you can find the Destiny Elfes along with some Water and Sun Fairies. The people around the planet get their powers once their born. So, to control that power, the King gives the baby a certain Crystal to protect it until the baby has grown up and has learnt his/her powers completely.
World's Ocean name: Underwater Crystals. An ocean filled with shining Crystals everywhere.
World Character: Denis Hlenster
Character description: He's the prince of Hlenster (his surname is Hlenster, after all). He's an eight years old magician under training. His hair is black and his eyes have the color of the deep see.
How Winx met the character: Winx met him along with his friend, Kira, while Denis and Kira were helping his father (the king) take care of his dragons. One of the King's dragons tried to attack the Winx and so did they to protect themselfs, when Denis told them to stop it cause the dragon was just a baby.
How the character helped them: Denis and Kira showed Winx the way to the Underwater Crystals and then helped them to get rid of Trytanus and his monsters, keeping him out of Hlenster's oceans with the power of the crystals.

Heres mine

World's name: Black Abyss
World's description: Black Abyss is a dark dead world with hardly any life on it but if you look closely you will see plants of all kinds and ghosts! The people won't harm you unless you harm there young prince.
World's Ocean name: Black Ocean Abyss
World character: Tony Black Abyss
Character description: He is the prince of Black Abyss (his surname is Black Abyss duh). He's is an eighteen years old Merboy/Human. His hair is dark redish brown and his eyes are hazel with slits (looks like snake eyes) but if he angry they are blood red.
How Winx met the character: He was teaching the young death sharks how to swim and hunt when the winx started to attack them so he yelled at them to stop because they were only babies and shot a warning blood spear.
How the character helped them: He showed them where the dark mirrors were but he was kidnapped by Trytanus and his monsters. While with Trytanus he began to see the real him and not the monster but the winx club defeated him and Tony was never the same again at times he sees and hears Trytanus in the cave where they fist met.