Please help me find this PSX (PS1) game [S]

There was this game on PSX. This is an adventure game with camera position from the side (Similar to super smash bros Brawl's subspace emissary mode), there is maybe 4 playable characters (as I remember, I may be wrong), and one of the first level is in a cave... I also remembered some beast in that level. Either you are the one who could turn into a beast, or the enemies are all beasts. I also vaguely remembered there was a animated 3d cutscene before the level (again, I may be wrong).

Please help me find this! Thank you Everyone! Greetings from Indonesia!