Kesagake was a massive, ruthless brown bear that struck terror in the village of Sankebetsu, Japan, in December 1915. Estimated at around 340 kg (750 lbs) and 2.7 m (9 ft) tall, he combined sheer physical power with extreme unpredictability. Over six days, he attacked multiple households, killing adults and children, including a baby, leaving victims mutilated and disfigured. Despite his size, Kesagake displayed incredible agility, cunning, and ferocity, ambushing humans and delivering instant lethal attacks with claws and teeth. His behavior exemplifies the raw, untamed danger of an apex predator pushed to its limits. In the ISG Supergroups, Kesagake represents pure primal power: uncontrollable, unstoppable, and merciless loyalty.