Within the documented sources of Space Adventure Cobra, no character named Lord Nelrron appears. Available materials extensively detail established figures including Cobra, Lady Armaroid, Jane Royal, Catherine Royal, Dominique Royal, Crystal Bowie, Sandra, and Lord Salamander across manga, film, television adaptations, and associated media. The franchise’s primary antagonist remains Lord Salamander, leader of the Pirate Guild and an energy projection of Adolf Hitler. Other key adversaries include Crystal Bowie, Cobra’s archenemy, and Sandra, commander of the Snow Gorillas. No alternative spellings or aliases matching Nelrron exist in the provided records.