A
AniwikTrack. Discover. Discuss.
HomeNews(new stories)BrowseCharacters
Sign InSign Up
A
AniwikTrack. Discover. Discuss.

Discover, track, and review anime. Join a passionate community of anime enthusiasts.

Browse

  • Browse Anime
  • Characters
  • News

Community

  • Discover Users
  • Sign In
  • Create Account

© 2026 Aniwik. All rights reserved.

HomeBrowse(new stories)NewsMy ListCharacters
Monster - Anime poster
  1. Home
  2. Characters
  3. Roberto
Roberto portrait

Roberto

ロベルト

Popularity
67fans

Emerging · 67 community favorites

Appearances
1
anime
Voice Actors
1
actor
Languages
1
dub

Roberto is one of the main villains in Monster and the most loyal servant of Johan Liebert. Like many of Johan's followers, he grew up at Kinderheim 511, an orphanage in East Germany that secretly ran a cruel project to reshape the children in its care. The experience wiped away so much of his past that he no longer remembers the name he was born with.

Roberto is a large, strong man and a skilled professional killer. He acts as Johan's bodyguard and enforcer, carrying out his orders without hesitation. He admires Johan deeply and shows no mercy to anyone who gets in the way. He appears more often than any of Johan's other henchmen and keeps coming back to cause trouble for Dr. Kenzo Tenma, the surgeon who is hunting Johan.

The only person who still remembers Roberto as a child is Wolfgang Grimmer, another former Kinderheim 511 child, who once saw him as a friend. Grimmer even recalls that the boy liked to drink cocoa. That small memory is a sad reminder of the ordinary kid Roberto once was, before the orphanage turned him into a weapon.

On screen

Appears in

Monster poster

Monster

Supporting Role2004TV74 episodes8.80
DramaPsychologicalThrillerHorror

Monster is a slow-burning psychological thriller. It was created by Naoki Urasawa, one of Japan's most respected manga artists. The anime was made by the studio Madhouse and directed by Masayuki Kojima. It ran for 74 episodes from April 2004 to September 2005, and it follows the manga very closely. Most of the story takes place in Germany and Czechoslovakia in the years after the Cold War split of Europe. The show feels more like a European crime novel than a typical anime. The story starts in 1986 in Dusseldorf, a city in West Germany. Kenzo Tenma is a talented young Japanese surgeon who works on the brain. He has a bright future, a rich fiancee named Eva Heinemann, and the favor of the hospital director. But Tenma slowly sees that the hospital cares more about money and fame than about patients. One night, he must choose between two emergency operations. One patient is an important man. The other is a young boy named Johan, who was brought in with a gunshot wound. Tenma follows his conscience and saves the boy. That choice costs Tenma a lot at first. But soon, strange and terrible things begin to happen around him. People who stood in his way start to die. Years later, Tenma comes face to face with the truth about the boy he saved. He decides that he alone must deal with what he set free. He leaves his safe career and starts a long, lonely search across the country. At the same time, the police start to see him as a suspect. The cast is large and full of detail. Inspector Heinrich Lunge is a cold, brilliant detective with an amazing memory, and he is sure Tenma is guilty. Nina Fortner is a young woman with a painful past, linked to Johan as his twin sister. Eva, bitter after her breakup with Tenma, keeps coming back into his life. Along the way, Tenma meets many ordinary people, such as cops, families, and orphans. Each of them gets their own short story, and many of those stories are quiet and moving. Monster is not a fast action show. It builds tension step by step, like a long mystery novel. Its big themes are the value of human life, the nature of evil, and whether a person is born bad or made bad. It also shows how cruel systems can hurt children. The mood is dark and serious, but it also has real kindness and hope. Monster is often called one of the best anime series ever made. The manga won the Tezuka Osamu Cultural Prize and the Shogakukan Manga Award, and it has sold over 20 million copies. The writer Junot Diaz, who won a Pulitzer Prize, also praised it in Time magazine.

Cast

Voice actors

1 actor
Nobuyuki Katsube voice actor portrait
🇯🇵

Nobuyuki Katsube

AniList Profile

Aniwik News

Latest news

All news
Digimon's fan-voted Best Adventure broadcast releases its main PV ahead of October 4

About Digimon: Digital Monsters+3

Digimon's fan-voted Best Adventure broadcast releases its main PV ahead of October 4

AArgal·9h ago
Isshiki-san Wants to Know About Love adds four cast members and a ginkgo-lined main visual

About Isshiki-san wa Koi wo Shiritai.

Isshiki-san Wants to Know About Love adds four cast members and a ginkgo-lined main visual

AArgal·9h ago
The Legend of Luo Xiaohei's Preschool Arc starts streaming on Bilibili October 30

About The Legend of Luoxiaohei+1

The Legend of Luo Xiaohei's Preschool Arc starts streaming on Bilibili October 30

AArgal·9h ago

From the same world

Related characters

From the same world

Related characters

Johan Liebert character image

Johan Liebert

Kenzou Tenma character image

Kenzou Tenma

Wolfgang Grimmer character image

Wolfgang Grimmer

Heinrich Runge character image

Heinrich Runge

Anna Liebert character image

Anna Liebert

Eva Heinemann character image

Eva Heinemann

Dieter character image

Dieter

Akanbou character image

Akanbou

Helmut Wolf character image

Helmut Wolf