Iida was initially one of the main characters ... with his peak being the Stain arc where he was key in the conflict with the titular villain, and author Kohei Horikoshi managed to flesh out ...

Ingenium, or Tensei Iida, only briefly appeared in the original ... There is confusion among MHA fans about whether Stain is a villain or an anti-hero. What's the difference, and what is Stain ...