Max Turner was a skilled detective known for his keen intellect and ability to solve even the most perplexing cases. One night, while investigating a series of mysterious disappearances, Max was ambushed by a shadowy figure and left for dead in a secluded forest. As he lay dying, a pack of Umbreon surrounded him, and their glowing rings pulsed with a dark, healing energy. Max was infused with their power, transforming him into Nightshade, a vigilante with the abilities of an Umbreon, dedicated to bringing justice to the shadows.