Hardbone is a third-party Transformer who turns into a tank. He is an homage to the 1987 Transformers characters Hardhead and Duros.
Other third-party Transformer homages to Hardhead and Duros include Headrobots Hothead.
In July 2012 Toyworld displayed concept art of a toy that was an homage to Generation 1 Hardhead and Duros.
In September 2012 Toyworld displayed pictures of the prototype of their Hardhead homage on their Facebook page.
In January 2013 Toyworld displayed color pictures of their first Headmaster and announced it would be called Hardbone.
Hardbone was released in February 2013.
The Radio Free Cybertron podcast for April 3rd, 2013 discussed Hardbone on the show.
- Toyworld TW-H01 Hardbone (2013)
- A new mold. Turns from robot to tank and driver. Come with Hardbone tank, a driver who turns into his head, two rifles and a knife that stores in the robot mode's leg. Comes with instructions and a collector card.
- Brian Kilby (July 5th, 2012). "TFormers.com News Desk". http://tformers.com (Podcast). TFormers. https://www.youtube.com/watch?v=pocrXK3qcCQ.
- Vangelus (January 10th, 2013). "[email protected]". http://www.tfw2005.com/ (Podcast). TFW2005. http://www.tfw2005.com/boards/wtf-tfw-transformers-podcast/762602-wtf-tfw-234-january-10-2013-a.html.
- TJ Duckett (January 13th, 2013). "TF Beyond". http://kumastyledesigns.com (Podcast). Kuma Style Designs. http://kumastyledesigns.com/tf-beyond-podcast-episode-10-moving-on-approx-167-min/.
- Brian Kilby (January 30th, 2013). "Radio Free Cybertron". http://www.tfradio.net (Podcast). TFRadio. http://www.tfradio.net/podcast/2013/2/2/radio-free-cybertron-1302013.html.
- Brian Kilby (April 3rd, 2013). "Radio Free Cybertron". http://www.tfradio.net/ (Podcast). TFRADIO. http://www.tfradio.net/podcast/2013/4/7/radio-free-cybertron-305.html.
- Josh (May 4th, 2013). "Cybercast". https://www.youtube.com/user/G1Hexatron?feature=watch (Podcast). Josh. http://www.youtube.com/watch?v=zavKSk3baIE.
- Jesse Wittenrich (w), Josh Burcham & Jimbo Salgado (p), Jesse Wittenrich (let), Brian Savage (ed). "Termination" Transformers: Timelines v2, 8 (Summer 2013), Fun Publications