*Both are outcasts. Victor is ostracized by his peers because of his scientific pursuits, while the monster is rejected by society because of his appearance.
*Both are driven by a desire for revenge. Victor seeks revenge on the monster for killing his brother, while the monster seeks revenge on Victor for creating him and then abandoning him.
*Both are ultimately consumed by their own desires. Victor's obsession with creating life leads to his downfall, while the monster's desire for revenge leads to his own destruction.