Dr. Prost stands as a central figure in the narrative, Nico's grandfather, grounding his key relationships in family. His driving goal propels him across Teslandia's harsh expanse alongside Nico, Al, and Sola. Together, they pursue Tokens – Sanctuary energy artifacts transformed by Cyborg Warriors – specifically gathered for the Lightning State. This mission supports the Lightning State's larger aim: using the Tokens for terraforming, seeking to turn Teslandia's desolate landscape fertile.

He shows fierce dedication to his scientific work and the Token collection, embodying a pronounced workaholic tendency – a trait shared within his family line, notably with grandson Nico. During the series' climax, he directly confronts the greater threat, Bran. A key element of their counter-strategy involves turning Bran's own technology against him.