Sam Riegel is an American voice actor, best known for his voice roles as Donatello in the 2003 Teenage Mutant Ninja Turtles series, Phoenix Wright in the Ace Attorney games, and Teddie from Persona 4. He has also worked for Nickelodeon as the voice director for Fresh Beat Band of Spies and Sanjay and Craig, as well as the voice of Riven in the revival of Winx Club. Since 2015, he has been a regular cast member of the web series Critical Role, in which he and other voice actors play Dungeons & Dragons.

Sam is appearing Saturday and Sunday of MomoCon 2026. Critical Role guests will have only pre-reserve autograph sessions available, more details about reservations coming soon! The Critical Role panel will not have a reservation needed.

Special Note – Critical Role Autographs and Photos – Jan 5th 1p ET

Critical Role autograph and photo presales begin Monday, January 5 at 1p ET. If you’re planning to get an autograph or photo with the Critical Role cast, we recommend purchasing early.  On site autograph and photo purchases will not be available, however the Critical Role panel will take place on Saturday of con and have no extra fee or reservation.

Presales go live at 1:00 PM ET on Monday, January 5 and the link will be available on on the autographs and guest pages a few hours before the date/time!

Photo Op (single) – $75.25
Photo Op (whole group) – $462.25

8×10 Photo Autograph – $64.50
Premium Autograph (funkos, statues, trading cards) – $86.00
Autograph/Selfie combo – $86.00
Standard Autograph – $53.75
Table selfie – $53.75
Video or Voice Recording – $107.50