Chavis will play Arthur Mayberry, a sweet young boy with eyes for the Reeves daughter Sally.
Morgan will play Ramsey, a once-strong man who has been broken by time.
Hurtt-Dunkley will play Ike, a deputy U.S. marshal.
Joaquina Kalukango, Lonnie Chavis, Rob Morgan, Ryan O’Nan and Justin Hurtt-Dunkley.Jeremy Pope/Advantage PR/Getty/Nathan Johnson
The cast also includes series regulars Lauren E. Banks, Forrest Goodluck, Barry Pepper, Demi Singleton.
Shea Whigham and Garrett Hedlund are set to guest star.
Bass Reevesis produced by MTV Entertainment Studios, 101 Studios, Sheridans Bosque Ranch Productions and Oyelowos Yoruba Saxon.
The series is created for television by Chad Feehan, who also serves as showrunner.
Morgan is repped by Stride Management and Yorn Levine Barnes.
