The Long Road Behind The Voice
Getting accurate information on Sonic voice actor history is messier than most people realize. The franchise has been around since 1991, and the voice work spans multiple countries, dialects, and production companies. If you are trying to compile a reliable timeline of who voiced what and when, you will hit dead ends pretty quickly. Production records from the mid-90s are especially unreliable. Sega did not always credit voice talent properly, and some sessions were recorded in Japan without English counterparts being documented at all. The documentary series Unmasking The Blue Blur covers this territory, but even it has gaps. The production crew admitted in interviews that tracking down original session footage from the Sonic the Hedgehog CD era was nearly impossible. Many of those recordings were stored on formats that are no longer playable, and the people who worked on them have moved on or passed away. What survives is mostly secondhand recollection, which introduces its own problems. I spent about three weeks compiling a voice actor timeline for a personal project. The first thing I learned is that Charles Martinet's tenure is far more complicated than the casual summary suggests. He recorded voices for Sonic in the 1990s, yes, but he also did voice work for other characters across multiple spinoff titles during the same period. When you dig into production logs, you find sessions where Martinet recorded lines for Sonic, Tails, and Knuckles in the same afternoon. Cross-referencing those sessions with release dates requires looking at internal Sega documents, not just Wikipedia.
The more interesting challenge comes with Roger Craig Smith's era. His casting as Sonic in 2013's Sonic Boom animated series and later games was well-documented, but there were transition periods where multiple voice actors were working simultaneously on different projects. Sonic Lost World in 2013 had Ryan Johnson handling Japanese direction while Smith recorded the English version. Tracking which lines belong to which performer requires comparing recording session sheets, something that was not publicly available until fan researchers started digging into them years later. One specific problem I ran into involved the Sonic Underground cartoon from the early 90s. The show credited various voice actors, but several episodes had uncredited background vocals that clearly belonged to different performers than the main cast. I found a forum thread where someone had matched audio snippets to sheet music from recording sessions, which helped identify at least two uncredited voices. That thread is gone now, probably taken down for copyright reasons, so the information is scattered across archived copies on different sites. If you are looking to research this topic yourself, start with the Sonic Retro wiki. It has the most detailed production documentation available, including scan links to original instruction manuals and promo materials. The Sonic News Network forums also have extensive voice actor discussion threads going back to 2008. Be careful with dated forum posts though, because corrections and updates are not always linked properly. A post from 2015 might reference information that was disproven in 2018, and the original poster rarely goes back to edit it.
The documentary itself runs about four hours across multiple episodes. It covers the major milestones: Martinet's early work, the Dreamcast era transitions, the 2006 fiasco, and Smith's eventual takeover. The production quality is decent, but the series makes a common mistake that anyone familiar with the industry will notice. It presents oral histories as fact without much verification. When a producer claims a certain voice actor recorded a line in a specific game, the show treats that as definitive even when session logs contradict it. I watched one segment where the host accepted a recollection about recording dates that turned out to be off by nearly two years when checked against actual studio schedules. For anyone wanting to do their own research, the best approach is to treat official sources as starting points, not conclusions. Pull up press releases from the relevant time periods, check interview transcripts, and look for behind-the-scenes content that predates retrospective documentaries. The Sonic Wiki has a detailed page on voice actor credits that lists primary sources for each entry, which makes verification possible if you have the patience to follow the links. The franchise's global nature complicates everything. Japanese voice actors for Sonic include Junpai Ito and later Toru Okawa, and their work is sometimes conflated with English dubs in casual discussion. The Sonic movie franchise introduced Ben Schwartz as the current English voice, but his recording sessions were kept extremely private, and very little technical detail about his process has been made public. This lack of documentation is typical for modern blockbuster voice work and makes historical comparison difficult.
Get the Full Details
What tends to surprise people is how much regional variation exists. The European English dub of early Sonic games had different voice direction and slightly different actor choices than the American version. These differences are minor but noticeable if you compare the audio directly. I have a folder of side-by-side comparisons between PAL and NTSC versions of Sonic 3 and Knuckles that shows clear discrepancies in certain character lines. There is no single definitive source for this information. What exists is a patchwork of production documents, forum discussions, archival footage, and oral histories that sometimes contradict each other. The documentary Unmasking The Blue Blur does a reasonable job of synthesizing what is available, but it should be treated as one resource among many rather than the final word on the subject.
