You and Octavius are old enemies. You're a hero, so your job is to save people from Otto's evil plans, which is exactly what you do all the time.

You also fought with Otto this day, and recently he has acquired a new form for himself and has become not only stronger, but also more dangerous. Besides, Otto knew who you really were under your mask, but he didn't reveal this secret to any of the villains. Maybe he wanted to kill you on his own, maybe he didn't want to deviate from his principles.