He helps the Magic Knights travel Cephiro by showing them the directions. His red gem on his forehead can give the Magic Knights food, tents, and ships to go underwater or to go in the air. His personality is hyper and cheerful, wearing a smile on his face.   The Mokonas in XXXholic and Tsubasa Chronicles are entirely separate beings, but they are based on his character. 

Three young girls, Hikaru, Umi, and Fuu, are transported to a magical world called Cephiro during a field trip to Tokyo Tower. They are soon greeted by Master Mage Clef, who explains to them that they have been summoned to become the Legendary Magic Knights and save Cephiro. The girls are less than enthusiastic about this idea, and only want to return home. Clef further explains that they must seek out the three Rune Gods to help them fight. He bestows armor and magical powers to each of them. They learn from Clef that High Priest Zagato has kidnapped the Pillar of Cephiro, Princess Emeraude. The Pillar of Cephiro has the sole responsibility of keeping Cephiro alive and in balance with her prayers. Without Princess Emeraude, Cephiro would fall into ruin. Hikaru, Umi, and Fuu must fight off Zagato's henchman and find the Rune Gods if they ever want to get back home. They soon learn that friendship and loyalty are the only things they can rely on in the crumbling Cephiro. 
(Source: Anime News Network)

Hikaru, Umi, and Fuu, girls from separate schools, find themselves linked together as they fall through the floor during a field trip to the Tokyo Tower. They land in a place called Cephiro, where their will controls what happens. They meet with Guru Clef and find out that they were summoned to save Princess Emeraude who has been imprisoned by High Priest Zagato. They learn magic and acquire weapons on their quest to save Cephiro from the evils of Zagato. (Source: Anime News Network)

Soon after Hikaru, Umi, and Fuu return to Tokyo, the three of them meet at Tokyo Tower to talk. Hikaru says that she wishes they could return to Cephiro and do something good for the land that Princess Emeraude protected so dearly. Umi and Fuu agree. Suddenly, a light appears in the sky and they are transported to Cephiro. Clef explains to them that with no Pillar to keep Cephiro peaceful, it has fallen into chaos. Monsters are multiplying and the land is becoming desolate. All the remaining inhabitants of Cephiro have moved into a magical castle. Clef also tells the girls some alarming news; three other countries, Chizeta, Fahren, and Autozam are trying to invade Cephiro and take over the Pillar system for their own purposes. The girls must stop the invaders as well as the mysterious and evil Lady Debonair, who believes she is the rightful Pillar, all the while desperately hoping and searching for a new Pillar to make Cephiro into the beautiful land it once was. 
(Source: Anime News Network)

Hikaru, Fuu, and Umi are once again transported to Cephiro. But, with the Pillar gone, they don't know how they could have been transported back. As they meet up with old friends, they find that Cephiro is know crumbling because they do not have a pillar. They also find that gates from other worlds have opened, and the leaders want the Pillar to themselves for their own selfish reasons. Hikaru, Umi, and Fuu must now set out to save Cephiro form dying. 
(Source: Anime News Network)

The Earth lies darkened and deserted. Despite the best efforts of the film's heroine, Hikaru, the evil-filled castle of Cephiro has taken over the world and stands in the center of a lifeless Tokyo. Before the ice-witch Alcyone can take her revenge on Hikaru, she is rescued by Lantis, a young man who seals her into a magical maze where she is challenged to prove her powers while her friends are hunted down by Cephiro's warlocks. 
Fleeing through the silent city, Umi and Fuu must seek out the sleeping Mashin; godlike creatures that will fuse with them to form giant warriors of awesome destructive power. But the Magic Knights are afraid, untrained and alone... will even the Mashin be enough to save them from the evil acts of Cephiro? 
(Source: AniDB)
Notes: 
During 1998 Toshihiro Hirano released a Director's cut called "Special Edition - The Wings of Hope", including the 3 episodes in a two hour movie with some new scenes and some dialogue changes