Leslie Bevis Leslie Bevis is the actress who portrayed Rionoj in three episodes of . Bevis was seen in the 1984 telefilm " Amazons " with William Schallert then acted in another telefilm , 1986 ' s " Kate ' s Secret " with Georgann Johnson . Bevis portrayed a villain in Mel Brooks ' 1987 sci - fi spoof " Spaceballs " opposite Tim Russ , Brenda Strong , and Dey Young . Bevis appeared in the 1988 biopic " Liberace " with Louis Giambalvo , DS9 star Andrew Robinson , and John Rubinstein . Later that year she appeared in the hit " Alien Nation " alongside Roger Aaron Brown , Earl Boen , Frank Collison , Jeff Kober , Tom Morga , Brian Thompson , and Keone Young . In 1993 , Bevis was seen in " The November Men " with James Wellington . In 1995 she appeared in " A Perry Mason Mystery : The Case of the Jealous Jokester " with Susan Diol and Ron Fassler . She was also in " Out There " with William Campbell , Bill Cobbs , Paul Dooley , Robert Picardo , Wendy Schaal , and Carel Struycken . Bevis made her episodic television debut on the 1983 series " Lottery ! " in " Bottom : False Illusion " with William Windom . 1985 saw Bevis on the single season action series " Street Hawk " in " Vegas Run " with Gregory Itzin . That year Bevis also guested on " V " starring Richard Herd in " The Littlest Dragon " with Brett Cullen and Jeff Yagher . 1986 gave Bevis a role on the crime series " Hardcastle & McCormick " starring Brian Keith and Daniel Hugh Kelly in " Brother , Can You Spare a Crime ? " with Kenneth Mars , Claudette Nevins , Robert Picardo , and Phil Rubenstein . In 1987 , Bevis acted on the action adventure series " MacGyver " starring Bruce McGill in " Lost Love " with Anthony De Longis . In 1988 , Bevis re - teamed with Brian Keith on the short - lived " Pursuit of Happiness " in " Boys Night Out " . That year also found Bevis on the sitcom " Hooperman " starring Barbara Bosson in " Trudy & Clyde " with Albie Selznick . In 1989 , Bevis was seen on the Southern legal drama " Matlock " starring guest David Froman in " The Good Boy " , which was Bevis ' only single guest role that year . In 1990 she appeared in the New York based sitcom " Dear John " starring Jane Carr and Harry Groener in " The Blunder Years " with Erika Flores . In 1991 , Bevis appeared on " Jake & the Fatman " in " I could Write a Book " with Ellen Geer . For her last single episode guest spot , Bevis went on the sandy crime drama " Silk Stalkings " in 1994 starring Charlie Brill in " Love Bandit " with Mark Moses and Gina Ravarra . Bevis also has had many recurring roles on series . Bevis got her start on the legal sitcom " Night Court " starring John Larroquette as Sheila , starting with " The Hostage " with Joy Garrett and Kenneth Tigar and " Walk Away , Renee " with William Utay , both in 1985 , with Utay again next in " Dan ' s Operation " in 1986 and " A Day in the Life " in 1987 with Raye Birk . Her second was on the prime - time soap " Falcon Crest " starring Robert Foxworth . She worked with Brett Cullen , Michael Ensign , and Jeff Kober in " Hot Spot " and " False Front " , both in 1986 , and " Missed Connections " in 1987 . Bevis had different roles on the crime drama " Hunter " , first playing Joyce Rogers in " Silver Bullet " in 1988 with Edward Wiley and under several aliases in " Sudden Withdrawal " in 1990 with Mark L . Taylor . Bevis also had different roles on " Murder , She Wrote " beginning with Barbara Desmond in " School for Murder " in 1995 with Robert Foxworth , Maryann Plunkett , and Nicolas Surovy and as Andrea Nader in " Nan ' s Ghost " in the same year with Fionnula Flanagan , Thomas Kopache , Raphael Sbarge , and Wendy Schaal . The series to feature Bevis most was the prime - time soap " Dallas " ( starring Joshua Harris ) as Diana Farrington from 1989 to 1990 and as Jeanne Lawrence in 1991 . Working first in " Hell ' s Fury " as her first time working with Ellen Geer , she also appeared in " Cally on a Hot Tin Roof " and " Sex , Lies & Videotape " with Danny Goldring , all in 1989 , and " A Tale of Two Cities " in 1990 with Spencer Garrett and Evelyn Guerrero . It was Bevis ' final episode , though , that paired her with the most " Trek " alumni on that series . In the " Dallas " series finale " Conundrum " in 1991 , Bevis shared the small screen with Mary Crosby , Brioni Farrell , Joel Grey , Rosalind Ingledew , Richard Lineback , and Tricia O ' Neil .