Bloody Roar 1 Unlock Uriko [exclusive] Link

Since there is no "official" in-game unlock method like completing Arcade Mode, you must use one of the following:

The battle was a blur of tears and blood. Mitsuko refused to strike back with lethal force, instead using her strength to pin the thrashing creature. She screamed Uriko’s name over and over, her voice cracking against the sterile walls. Slowly, the frantic energy began to dissipate. The monstrous protrusions receded, and the Chimera’s roar faded into a soft, human whimper. Bloody Roar 1 Unlock Uriko

The game may crash if two players attempt to use Uriko simultaneously. Since there is no "official" in-game unlock method