Character profile
Hikaru Gero
下呂ヒカル
Hikaru Gero is a main character in MARRIAGETOXIN (2026). This page lists 2 anime and 1 manga, voiced by Haruki Ishiya (JAPANESE) and Ethan Gallardo (ENGLISH).
About Hikaru Gero
Hikaru Gero is part of the Gero Family, one of the top five families of specialists. He is the current heir to the Poison clan. A poison-using hitman from the clan of assassins. In order to keep his sister from being forced into having a child to continue the lineage of the clan, Gero decides to try and get married and have a child of his own.
- Gender
- Male
- Birthday
- November 24
- Blood type
- A
- Specialist Type
- Poison User
Hikaru Gero at a glance
Hikaru Gero first shows up in our catalog in MARRIAGETOXIN, from 2026, as a main character. Our records show two anime appearances plus one manga.
Cast and appearances
Haruki Ishiya voices Hikaru Gero in the original Japanese. In English, the role goes to Ethan Gallardo. You can also find them in MARRIAGETOXIN 2nd Season.
Quick questions
What anime is Hikaru Gero in?
MARRIAGETOXIN and MARRIAGETOXIN 2nd Season.
Who voices Hikaru Gero in English?
Ethan Gallardo.
Who is Hikaru Gero's Japanese voice actor?
Haruki Ishiya.
Anime appearances
Series, films and specials featuring this character.
Manga appearances
Manga, light novels and webtoons featuring this character.
Voices behind the character
Voice actors across languages.
