what is romantic in the moral victor shares with walton

They are both adventurous. Victor's sense of adventure is on the creepy side but they both want to push the boundaries of their chosen study to the limit. I guess that's kind of romantic!

Check this excerpt out, Ill source-link it below.

At the beginning of the novel we are introduced to Robert Walton who says for his cause, “There is something at work in my soul which I do not understand . . . a belief in the marvelous, intertwined in all my projects, which hurries me out of the common pathways of men, even to the wild sea and unvisited regions I am about to explore” (Shelley 10). On the other hand, Victor makes his declaration of purpose when he says, “ more, far more will I achieve: treading in the steps already marked, I will pioneer a new way, explore unknown powers, and unfold to the world the deepest mysteries of creation” (Shelley 40). On drawing conclusions from these two statements, Walton as well as Victor Frankenstein can be considered Romantic heroes. “The Romantic hero is either a solitary dreamer, or an egocentric plagued by guilt and remorse, but, in either case, a figure who has kicked the world away from beneath his feet” (Ousby 851). In Victor’s case, an obsession with the nature of science pushes him to cross the boundary that separates the forces of human power and nature when he decides to construct his creation. Plagued by his own ambition to do something great and beyond that of his predecessors, Victor dances with the forces that in the end takes everything from him.