In both stories, Sparky dies, much to the dismay of his young owner, who proceeds to bring the pup back to life in his makeshift laboratory. Sparky is a devoted and playful bull terrier whose sense of curiosity is matched only by his beloved owner, Victor. Sparky enjoys chasing after balls and being the star of Victor’s homemade movies. He exudes tons of energy and enthusiasm, which even his untimely death doesn’t diminish.