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Yes, there are a couple that I know of (now that we are closer to airing)...

~~~Spoiler Warning~~~~

James Frain will be playing Sarek--He is VERY important to the main character, Michael's (Soniqua Martin) story -- and Rainn Wilson is playing Harry Mudd.

But on the whole Discovery advertises new heroes and villains and is exploring @20 Klingon Houses to expand on different cultures on different planets. In addition Michael is not the Captain of any ship, but the series is going to be from her perspective.

http://variety.com/2017/tv/news/star-trek-discovery-rainn-wilson-harry-mudd-1202019986/

UPDATE: Season 2 Casting Spoilers Ahead!

Ason Mount has been tapped to play USS Enterprise's Captain Pike. He has a mission enacted through Discovery, which includes a search for Spock played by Gregory Peck's grandson, Ethan Peck. In addition a character originally featured in the original series' pilot, but taken out by a bad reaction from the test audience, is now re-instated back into canon and played by Rebecca Romijn. It is also presumed from the trailers and/or possibly Star Trek Discovery's Short Treks that Harry Mudd, Amanda Greyson, and Serak will also return in some capacity.

Yes, there are a couple that I know of (now that we are closer to airing)...

~~~Spoiler Warning~~~~

James Frain will be playing Sarek--He is VERY important to the main character, Michael's (Soniqua Martin) story -- and Rainn Wilson is playing Harry Mudd.

But on the whole Discovery advertises new heroes and villains and is exploring 24 Klingon Houses to expand on different cultures on different planets. In addition Michael is not the Captain of any ship, but the series is going to be from her perspective.

http://variety.com/2017/tv/news/star-trek-discovery-rainn-wilson-harry-mudd-1202019986/

UPDATE: Season 2 Casting Spoilers Ahead!

Ason Mount has been tapped to play USS Enterprise's Captain Pike. He has a mission enacted through Discovery, which includes a search for Spock played by Gregory Peck's grandson, Ethan Peck. In addition a character originally featured in the original series' pilot, Pike's "Number One", but was then taken out by a bad reaction from the test audience, is now re-instated back into canon and played by Rebecca Romijn. It is also presumed from the trailers and/or possibly Star Trek Discovery's Short Treks that Harry Mudd, Amanda Greyson, and Serak will also return in some capacity.

Yes, there are a couple that I know of (now that we are closer to airing)...

~~~Spoiler Warning~~~~

James Frain will be playing Sarek--He is VERY important to the main character, Michael's (Soniqua Martin) story -- and Rainn Wilson is playing Harry Mudd.

But on the whole Discovery advertises new heroes and villains and is exploring @20 Klingon Houses to expand on different cultures on different planets. In addition Michael is not the Captain of any ship, but the series is going to be from her perspective.

http://variety.com/2017/tv/news/star-trek-discovery-rainn-wilson-harry-mudd-1202019986/

Yes, there are a couple that I know of (now that we are closer to airing)...

~~~Spoiler Warning~~~~

James Frain will be playing Sarek--He is VERY important to the main character, Michael's (Soniqua Martin) story -- and Rainn Wilson is playing Harry Mudd.

But on the whole Discovery advertises new heroes and villains and is exploring @20 Klingon Houses to expand on different cultures on different planets. In addition Michael is not the Captain of any ship, but the series is going to be from her perspective.

http://variety.com/2017/tv/news/star-trek-discovery-rainn-wilson-harry-mudd-1202019986/

UPDATE: Season 2 Casting Spoilers Ahead!

Ason Mount has been tapped to play USS Enterprise's Captain Pike. He has a mission enacted through Discovery, which includes a search for Spock played by Gregory Peck's grandson, Ethan Peck. In addition a character originally featured in the original series' pilot, but taken out by a bad reaction from the test audience, is now re-instated back into canon and played by Rebecca Romijn. It is also presumed from the trailers and/or possibly Star Trek Discovery's Short Treks that Harry Mudd, Amanda Greyson, and Serak will also return in some capacity.

Yes, there are a couple that I know of (now that we are closer to airing)...

~~~Spoiler Warning~~~~

James Frain will be playing Sarek--He is VERY important to the main character, Michael's (Soniqua Martin) story -- and Rainn Wilson is playing Harry Mudd. -But on the whole Discovery advertises new heroes and villains and is exploring @20 Klingon Houses to expand on different cultures on different planets. In addition Michael is not the Captain of any ship, but the series is going to be from her perspective.

http://variety.com/2017/tv/news/star-trek-discovery-rainn-wilson-harry-mudd-1202019986/

Yes, there are a couple that I know of (now that we are closer to airing)...

~~~Spoiler Warning~~~~

James Frain will be playing Sarek--He is VERY important to the main character, Michael's (Soniqua Martin) story -- and Rainn Wilson is playing Harry Mudd.

But on the whole Discovery advertises new heroes and villains and is exploring @20 Klingon Houses to expand on different cultures on different planets. In addition Michael is not the Captain of any ship, but the series is going to be from her perspective.

http://variety.com/2017/tv/news/star-trek-discovery-rainn-wilson-harry-mudd-1202019986/