Captain Volca commands as co-leader of the Dinosaur Tribe on Elementros alongside Megatron, a position shared since Megatron's arrival. Before Megatron appeared, he ruled the tribe alone. He champions strength, victory, and the conquest of Elementros above all, embodying the tribe's ambitions. He wields knowledge of an ancient tribal legend identifying Megatron as a pivotal figure destined to bring dinosaur glory. This prophecy fuels his allegiance to Megatron and their shared conquest. His primary power harnesses Flame Energy, granting him control over fire which he channels into attacks like "Jurassic Ball Fire" and "Volca Burning." He also executes the "Jurassic Vol Flare" attack when combined with Megatron. A core capability is "wildocking," a process enabling physical combination with an Energy Master like Megatron. In this merged state, he typically forms an arm or leg component, allowing Megatron to wield his Flame Energy in battle. His personality merges charisma with ruthless focus on dominance. He openly taunts adversaries like Optimus Prime, hailing Megatron as the "hero" securing tribal supremacy. He shows deference to Megatron, apologizing after tactical failures, though expresses annoyance towards other tribe members like Leafback. Within the Wild King narrative, he initiates hostilities with Megatron, attacking Optimus Prime and Lightlong upon their arrival on Elementros. He actively battles, strategizing to prevent their combination and later fights merged with Megatron via wildocking, executing their plan to conquer the planet. He also appears in supplementary media, including the stop-motion diorama story "Exciting Battle! Wildocking!" and the crossover comic "Transformers Go! Go! / Wild King special."