Jackie Chan Adventures (2000)

S4E8 The Shadow Eaters

Title: The Shadow Eaters Plot: After numerous unsuccessful efforts to obtain an oni mask's power, Hak-Foo finally succeeds. However, he feels let down by the diminutive size of his shark-like shadowkahn. To his surprise, Hak-Foo soon realizes that these creatures possess an insatiable hunger for consuming shadows, revealing their true potential and setting the stage for an unexpected adventure.