He appeared in the films '' Star Trek IV : The Voyage Home '' and '' Star Trek VI : The Undiscovered Country '' as Fleet Admiral Cartwright of Starfleet Command . Peters portrayed Joseph Sisko , father of Deep Space Nine 's commanding officer , Benjamin Sisko , on '' Star Trek : Deep Space Nine '' . In 1993 , he was a member of the jury at the 43rd Berlin International Film Festival . In early 2005 , six months before his death , Peters guest-starred in an episode of '' JAG '' during its final season , " Bridging the Gulf " , season 10 episode 15 . Peters worked with Charlton Heston on several theater productions in the 1940s and 1950s . The two became friends and subsequently worked together on several films , including '' Major Dundee '' , '' Soylent Green '' , and '' Two-Minute Warning '' . He voiced Lucius Fox in several episodes of '' Batman : The Animated Series '' and Morris Grant/Soul Power in the animated series '' Static Shock '' ( 2000 – 2004 )
43rd Berlin International Film Festival
43rd Berlin International Film Festival
Brock Peters