The two main characters Victor and Walton, have several things in common. They are both incredibly ambitious and in love with science. They share a fascination with nature and the environment, although their love is manifested in contrasting ways.
Detailed answer:
Both of these men share a fascination with science, which they show in various ways. Walton loves geography and gave his life to learn it by discovering new places. He wishes to benefit humanity by making a significant geographical discovery. Victor, on the other hand, is in love with biology and anatomy. Later, it turns out to be not beneficial for him. In contrast with Walton, Victor is arrogant because he thinks of himself as a god and the only person who can make the world a better place.
The two of them are ambitious because they are trying to push the boundaries of their knowledge. They become unstoppable achieving their ambitious desires. Walton travels to the end of the world to make himself famous, and Victor goes there to get his revenge. They both have to leave their domestic life to satisfy their lingering yearning for scientific fame. They stop at nothing; they put their ambitions before their health and happiness, and their family.
They both cannot face the consequences of their actions, blame others for their failures, and seek approval through friendship. For example, Walton is so lonely that he refers to Victor as a “brother” to make friends with a similar person. Yet, Walton cannot see that his desire to become friends with Victor, a stranger, is so strong because he wants someone to understand him. But he is not willing to open up to others. Victor acts the same way. He turns his guilt into revenge, ignoring his inner feelings. He tries to kill the Monster, his creation, to accept his sensation of deep remorse.