Dabi, as fans have been told, is about to explode and plans to take out a big chunk of the country with him.

Source: https://gamerant.com/my-hero-academia-chapter-387-spoilers-release-date/

Dabi being revealed to be a scarred and twisted villain who used to be the son of the No.1 Hero is a catastrophic epiphany to the characters and the world at large.

Source: https://gamerant.com/my-hero-academia-was-dabis-identity-reveal-underwhelming/

For example, one artist on Twitter posted two adorable but emotional images that depict a possible (but unlikely) conclusion to the conflict between the young hero Shoto Todoroki and the villainous Dabi.

Source: https://www.cbr.com/my-hero-academia-manga-85-million-copies-circulation/

If he had been born with both fire and ice capabilities, as Endeavor wanted, Dabi might not have felt so inferior.

Source: https://www.cbr.com/mha-characters-different-quirks/