John Hasler (born in Barking, London, England, UK on 24 April 1974) is an English actor and voice-over artist who joined the cast of Thomas & Friends in 2015. He took over the roles of Thomas and Rheneas from Ben Small.
Hasler is best known for his appearance as T-Shirt in the children's TV series T-Bag. Other credits include "Gnomeo and Juliet" (animated by Arc Productions), "Toot the Tiny Tugboat", "Go Jetters", "The Legends of Treasure Island", and two of HiT Entertainment's other shows; "Mike the Knight" and "Fireman Sam".
- Never Overlook A Little Engine (performed)
- We Wish You a Merry Christmas (performed)
- Will You Won't You (performed)
- Streamlining (performed)
- You Can Only Be You (performed)
- Be Who You Are, and Go Far (performed)
- Who's Thomas? (performed)
- The Hottest Place in Town (performed)
- I Want To Go Home (performed solo)
- The Most Important Thing is Being Friends (performed)
- He played T Shirt in "T-Bag" which was written by Lee Pressman, being the only cast member to remain in the show throughout its nine-year run. Kerry Shale also featured in a few episodes of this show.
- He works alongside Steven Kynman on "Fireman Sam". He first came into the show to take over the role of one of Steven's characters. Laura Beaumont, Paul Larson, Lee Pressman, Miranda Larson, Christopher Keenan, Karen Davidsen, Karen Barnes, Karen Davies, Marion Edwards, Christopher Skala, Lenora Hume, Sam Barlow, Andrew Brenner, Dave Ingham, Simon Nicholson, Jan Page, Jocelyn Stevenson and Ian McCue all worked on the series as well.
- Both he and Keith Wickham voiced characters in "Toot the Tiny Tugboat".
- He appeared in the 1980s films "Breakout" and "Brazil" alongside TUGS voice actor Simon Nash.
- He, along with David Holt and Rob Rackstraw, voiced characters in "The Legends of Treasure Island".
- He, Adam Beck, Chiara Gioncardi, Jukka Voutilainen, Alan Kennedy, Rob Silvestri, Dave Peacock, Albert Cohen, Elina Iskoz, David Stoten, Dino Athanassiou, Hadar Shachaf Ma'ayan, Edson Matus, Jarosław Boberek, Ryan Quaglia and Jesse Lickman have all worked on "Gnomeo and Juliet".
- He, along with Nigel Pilkington, voiced characters in "Teenage Fairytale Dropouts".
- John and his family attended the Blue Carpet premiere events including Sodor's Legend of the Lost Treasure on 12th July 2015 and The Great Race on 22nd May 2016.