Learn Spanish (Latin America): Lo malvado nos asusta, aunque el héroe siempre gana. - What is evil scares us, even though the hero always wins.

Lo is the neuter article. When you put lo in front of a masculine singular adjective like malvado (evil), it turns that adjective into an abstract noun meaning "what is evil" or "the evil thing." If you said el malvado, you would be talking about a specific person: "the evil man" or "the villain."

Can I use lo malo instead of lo malvado here?

Yes, but it changes the tone slightly. Lo malo simply means "the bad thing" or "what is bad." Lo malvado is much stronger and more dramatic, translating to "what is evil" or "wickedness," which fits perfectly in a sentence talking about a hero (el héroe).

Is the verb asustar working like gustar in this sentence?

Yes, it follows the exact same pattern! In nos asusta, the subject is lo malvado (what is evil), and it is performing the action on us (nos). It literally translates to "What is evil scares us," just like nos gusta means "It pleases us."

I learned that aunque often uses the subjunctive. Why is gana in the indicative mood?