Lisa Nanase

Lisa Nanase (七瀬 リサ) was the secondary protagonist in the movie Ultraman Tiga & Ultraman Dyna & Ultraman Gaia: Battle in Hyperspace.

History
One day, a new student named Lisa Nanase moved to Tsutomo's school. With both of them isolated from students (in Tsutomo's case, due to his fanatic over Ultraman), Lisa decided to show him something. The next day, after school, she presented him and Yu the Red Sphere, capable of granting wishes. Witnessing his Ultraman Gaia drawing on the floor, this gave him an idea and wished Gamu Takayama to appear in his world. Hiroshi Kashimada, a bully sees this and confiscate the ball from him. He summoned Satanbizo via the ball and the alien rampaged with Tsutomo regain the ball. Gamu quickly transform into Ultraman Gaia and finished the alien with ease, despite having his Color Timer blinked in the beginning of the battle. Gamu was later brought to Tsutomo's hideout in order to cover himself from crazed fans. He scanned the Red Sphere before forcefully teleported back to his dimension. Back in Aerial Base, Gamu studied the scanning he made on the magic ball before teleported into hyperspace where he sees Lisa and behind her a scene of mass destruction. She pleaded Gamu to rescue her universe from destruction.

Meanwhile in the real world, Hiroshi and his friends dreamed of creating a monster that exceed Satanbizo and defeated Ultraman Gaia as they began to create their ideal monster out of plastic models. Soon, they capture Tsutomo and Yu while regaining the Red Sphere in their possession causing it turned larger and grow spikes. Hiroshi dragged Tsutomo and Yu to their school's rooftop and summoned his creation, King of Mons into reality. Lisa appeared, having watched the full event. With Gamu as Gaia appeared having difficulty in battling the monster, Tsutomo remove the ball from Hiroshi, causing him and his subordinates to regain their sanity as they felt remorse of their actions. However, it landed on Yu's hands, corrupting him as he shouted his desire to destroy the world, spawning Bajiris and Scylla. As King of Mons' Climate Beam hit the school, the ball moved from Yu's possession, regaining back his conciousness. Tsutomo quickly grabbed the ball and summoned Ultraman Tiga and Ultraman Dyna. After the Ultras finished battling the monster, the ball returned back to it's original form. Lisa revealed herself to be an interface of the Red Sphere. She urged Tsutomo to wish the ball to disappear, as he forcibly agreed, causing it to vanish, followed by Lisa, Ultraman Tiga, Dyna and Gamu but not revealing that he can still meet him due to his book.

The day later repeated by the red sphere but the real Lisa Nanase appeared as a new student. Tutomo later brought him at the rooftop to show her his book, Gulliver's Travels with Gamu's signature. An XIG Fighter EX appeared at the sky, passed the two students and vanished despite Lisa missed the opportunity.

Trivia

 * Lisa's actress would later portray Alien Gyashi Shau in Ultraman Cosmos: The Blue Planet (2002) and Ultraman Cosmos Vs Ultraman Justice: The Final Battle.