Beast Rizer Pocket

Beast Rizer Pocket, known in Japan as Mini Beast Rizer (ミニビーストライザー), is an action-platform video game by Burst Arts Inc. and Namco for the Nintendo Game Boy. The first handheld game in the Rizer series, it was released in Japan on May 5, 1996 and localized overseas on May 20, 1996. The game has the players play as four different characters, each with a different narrative.

Characters and Synopses
As stated earlier, Beast Rizer Pocket has four playable characters with their own plotlines. The final story focuses on a giant chimeric monster that emerged from the ocean, its presence threatening the inhabitants of Neo Islands. While Theo transforms into his chimera self to defeat it, the other heroes fight the chimeric clones of themselves the monster was able to produce. After they have done their job, the chimera disappears into the ocean and the heroes once again saved the islands.
 * Theo Stormwald: A year after the final battle against Porter Tech, Theo was suddenly invited to participate in the Island Challenge, where many are chosen to pass several tests and courses in order to be given the Islander's Medal. Aside from Aaron and Ryuji joining him, he meets two new contestants: Bill, an egotistic boy who claims to know everything about the islands, and Victor, a cool-headed man with a mysterious personality.
 * Julie Stemwell: Julie and Elsa find their town suddenly assaulted by crystals, which were derived from Wilhelmina Witch and her no-good Gem Guards. After witnessing the attack, Samuel has developed aircrafts so that Julie and Elsa can go after the witch and destroy all of the crystals.
 * Walter McDowell: Walter's self-managed business is in danger of being absorbed by a corrupt entrepreneur named Renfield, who plans on using his company name for a suspicious-looking amusement park he is building in the center of the Southern Islands. He hires Grace, who was just visiting the park in development herself, to help investigate the amusement park and put an end to Renfield's schemes.
 * Ozzy Colemann: Ozzy goes to the Vanilla Isles for a personal vacation trip, but then he discovers a giant sunken ship, inhabited by a clan of seamen who claim to be beastmen with the intent of conquering all of the oceans. Ozzy must now investigate this sunken ship and defeat the Aqua King and his boastful son Kai.