Momo can refer to several very different things, but today most people mean either the K‑pop star from Twice or the creepy “Momo Challenge” internet hoax.

Main meaning: Momo from Twice

When people online ask “who is Momo?” in a pop‑culture or fandom context, they’re usually talking about Momo Hirai , a Japanese member of the K‑pop group Twice.

  • Full name: Momo Hirai, often just called Momo.
  • Nationality: Japanese, born in Kyoto Prefecture, Japan.
  • Career: Trainee at JYP Entertainment who later debuted in the girl group Twice and the sub‑unit MiSaMo.
  • Role in Twice: Known as a main or lead dancer , plus rapper and supporting vocalist, often highlighted for powerful performance skills and stage presence.
  • Popularity: Frequently listed among the most popular K‑pop idols and one of the best‑known Japanese idols active in South Korea.

A lot of forum and social chatter about “Momo” revolves around:

  • Her dancing clips and fancams.
  • Variety‑show appearances and memes made from them.
  • Shipping and fan discussions within the Twice fandom.

So if the context is music, K‑pop, Twice, or fandom forums, “Momo” almost certainly means Momo Hirai from Twice.

The other “Momo”: the hoax and urban legend

There’s also a darker, horror‑side meaning that sometimes trends: the Momo Challenge hoax and the creepy image associated with it.

  • The “Momo Challenge” was an internet urban legend claiming a scary character called Momo contacted kids online and told them to do harmful or dangerous tasks.
  • Investigations and later coverage showed it functioned as a moral panic and hoax , not a verified, organized “challenge” causing confirmed deaths in the way rumors suggested.
  • The disturbing face widely shared online came from a Japanese sculpture , not from an actual cursed entity or real “monster.”

Because of this, “Momo” can also show up in horror YouTube videos, creepypasta threads, or “internet mysteries” discussions.

If you ever see content online that pressures you to hurt yourself or others, close it, talk to someone you trust, and, if needed, contact local help lines or authorities. Staying safe matters more than engaging with any trend.

Other uses of the name “Momo”

“Momo” is a short, simple name, so it pops up in lots of places.

  • As a stage or pen name for different artists.
  • As a character name in anime, manga, and games (for example, people on fandom subreddits discuss various “Momo” characters).
  • As a historical or mythological name, like a legendary king in Tonga, and as a nickname for other public figures.

Quick way to tell which “Momo” people mean

  • Talking about K‑pop, Twice, MiSaMo, concerts, albums, fancams → Momo Hirai (Twice member).
  • Talking about creepy WhatsApp messages, urban legends, “cursed” images, or old news scares → the Momo Challenge hoax / horror meme.
  • Talking about anime, manga, or games → usually a fictional character named Momo.

If you tell me the context where you saw “Momo” (music, horror, anime, etc.), I can narrow it down to the most likely specific person or character. Information gathered from public forums or data available on the internet and portrayed here.