|This article is about a subject in the real world.|
Information in this article is about real-life people, companies, and objects, and does not relate to the in-universe Sonic series.
Headcannon is a Los Angeles-based software development business founded in November 2012 and run by Simon Thomley, also known by the alias "Stealth". He is one of the developers and programmers who has worked on games from the Sonic the Hedgehog series.
- at Sonic Retro