Altered Beast

The story follows a man called Luke Custer who is a “Genome-Cyborg”, which in the game is a human that has had his DNA and other genetic make-up altered so that he can (after acquiring the chip containing the right genes for each creature) transform into a mythical beast.
The main creatures he transforms into are a Werewolf, a Merman, a Garuda, a Wendigo, a Fire Minotaur, and a Thunder Dragon.
Its storyline differs from the original Altered Beast games where during the game, you gain a serum that allows you to change at will. There are a number of difficult boss challenges and puzzles within the game, plus some extra characters to transform into including a White Tiger Man, a Grizzly Bear, and the alien-cloned U.W.H. (Unidentified Weightless Human) for those who finish the game.