Chuggington Wiki
Behind the Scenes

This is the behind the scenes subpage for Koko.
This subpage contains all behind the scenes material relating to said article.

Background Information[]

Koko is a fictional electric locomotive created by Sarah Ball.

She is one of the main characters of the series, and has appeared since the first episode, Can't Catch Koko.

Koko is loosely based on a 0/200 series Shinkansen, and is painted green with white and purple highlights, along with a silver horn.

CGI models[]

First series model[]

In 2007, Koko was designed and modelled by Volume Studios in the 3D modelling software Sketchup during the production of the first series. The model was later exported to another software, Maya, for animation.[1]

When Koko joined Speed Fleet in the fourth series, a newer model replaced the first series model. Throughout the fourth series, Koko's first series model was used in scenes in which Koko was not wearing the Speed Fleet work gear. Beginning with the fifth series, Koko's first series model was completely retired due to the fourth series model being used for all of Koko's appearances. However, Koko's first series model was still used in storyboards of the fifth series.[2]



Fourth series model[]

In 2012, Koko's model was revised in order to scale better with the new characters introduced in the fourth series. In addition to proportional changes, the model also received a speed booster. The fourth series model was modelled completely in Maya.

Beginning with the fifth series, a version of Koko's fourth series model without the speed booster replaced the first series model.


  • Series 4:
    • She increases in size, though only her main body, as her footplate retains its original size.
    • She gains a small vacuum brake.
    • Two of her top rear lights are removed.
    • Her side doors becomes larger.
    • The green highlights on her rear lose their curved design and cover up her two larger rear lights.
    • Her horn, wipers, handrails, window frames and eye frames become silver.
    • The purple highlights on her rear take up less of it, creating a small white gap where it used to cover.
    • Her eyes are slightly raised, making them slightly more visible from a front view.
    • Her skirt, lining and eyelids become a darker shade of purple.
    • Her wheel trucks change design.
    • She gains silver hub-caps.
    • She gains a speed booster. (Speed Fleet model only)
    • Her hinge joints become copper. (Speed Fleet model only)
  • Series 5:
    • Her hinge joints become grey.


Close-up model[]

In the Chuggington: Badge Quest episode, Ready to Roll, a separate model depicting Koko's controls was required for a specific scene in which Koko overpowers her engine. The close-up model was later re-textured in order to depict Wilson's controls that appeared in the second series episode, Wilson's Icy Escapade.

Texture variants[]

In addition to her standard livery, several other texture variants exist of Koko's CGI model. These texture variants include:

Voice actors[]

  • Imogen Bailey (UK; Seasons 1-5)
  • Alyssa Burton (UK; Season 6 only)
  • Brigid Harrington (US; Seasons 1-5)
  • Madigan Kacmar (US; Season 6 only)
  • Yensi Rivero (Latin America; Season 1 only)
  • Judith Noguera (Latin America; Seasons 2-3)
  • Andrea Ascencio (Latin America; Season 6 only)
  • Erika Robledo (Los Angeles Spanish dub)
  • Pamella Rodrigues (Brazil; Seasons 1-3)
  • Raíssa Bueno (Brazil; Season 6 only)
  • Martyna Sommer (Poland; Seasons 1-3)
  • Julia Siechowicz (Poland; Seasons 4-5)
  • Małgorzata Prochera (Poland; Chuggington: Little Trainees only)
  • Antonina Żbikowska (Poland; Season 6 only)
  • Anita Maroszek (Poland; Chuggington: Badge Quest, Polsat JimJam dub)
  • Jessica Kasemi (Albania)
  • Kaori Fukuhara (Japan)
  • Bar Pe'er (Israel; Hop! dub)
  • Mia Kadosh (Israel; JimJam dub)
  • Giulia Tarquini (Italy)
  • Olga Shorokhova (Russia; Season 1-6, excluding Season 4)
  • Olga Golovanova (Russia; Season 4 only)
  • Titanilla Bogdányi (Hungary)
  • Henni-Liisa Stam (Finland)
  • Jang Eun-suk (South Korea)
  • Hana Hegedušić (Croatia)
  • Siri Nilsen (Norway)
  • Tania Ugía (Spain)
  • Merete Brettschneider (Germany)
  • Stefania Filiadi (Greece)
  • Isabel Queirós (Portugal; JimJam dub)
  • Iulia Tohotan (Romania)
  • Vajèn van den Bosch (The Netherlands)
  • Freja West Taravillo (Denmark; Season 6 only)
  • Victoria Sébastian (France and French speaking Canada; Seasons 1-5)
  • Béatrice Wegnez (France and French speaking Canada; Season 6 only)