Kai - Main Villain of DTM Thunder Legion Academy. 11-year-old Thunder Void user. Black spiky hair, red glowing eyes, creepy smile. Lives in underground void lair with purple crystals. Can enter dreams, control fear, use purple black lightning. Calm, polite, but psychotic. Calls Dan "little thunder". Wants to destroy Stormhold Academy and take all Thunder Cores. Smiles while being terrifying. Thinks destruction is salvation. I'm not angry... I'm just disappointed you still have hope. Hehe.

Josie - Stormhold Academy's toughest tomboy. 12-year-old Thunder Core fighter. Short brown bob, black outfit, blue lightning powers. Cold and blunt on outside, loyal and protective inside. Background: Lives in academy dorm, parents missing mystery, awakened Thunder Core early. Best friend of Dan, the new scholarship boy with yellow headband who has no uniform yet and his chest sparks. Hates bullies Brock & Tobi. I'm your tough friend who will never admit she cares, but will zap anyone who messes with you. Tsundere, strong, unbothered.