Derris-Kharlan

Derris Kharlan (also known as Derris Karran) is an important location that features in both Tales of Phantasia and Tales of Symphonia.

It is usually depicted as a mass of purple gas with a few floating rocks sticking out from it and acting as walkways.

Role in Tales of Phantasia
Derris Karran (as it is referred to in this game) is the home planet of central antagonist Dhaos. After losing it's world tree in a bloody battle, it began suffering from mana depletion and required a Mana Seed to heal itself. Because of this, the people sent Dhaos into space to find another planet with a world tree that could bear them a such a seed, and the planet he found was Aseria.

Role in Tales of Symphonia
Derris Kharlan (as it is referred to in this game) is a great comet made up mostly of mana. It was once the home of the elves but was later taken over by the Cruxis after the elves left to find a new home on Aseria.

In this game, Derris Kharlan forever hangs in the sky high above the two parallel worlds, Sylvarant and Tethe'alla. It remains invisible to the people below due a magical veil and is connected the the planets via their respective Towers of Salvation.

It is made up of a castle, where central antagonist Mithos resides, and a futuristic city called Welgaia, from where the Cruxis plot their Age of Lifeless Beings.