<P> Endora (Agnes Moorehead), is Samantha's mother and Darrin's chief antagonist in the series . Like all witches, she never reveals her surname, indicating to Darrin that he would be unable to pronounce it . Endora finds mortals dull and disapproves of Darrin, as do many of Samantha's relatives . Endora refuses to even use Darrin's name, alternatively calling him "Derwood", "What's - his - name", "Darwin", "Dum - Dum", etc., all much to his annoyance . She refers to him as "Darrin" only eight times during the entire series . Endora's ploys to provoke a breakup always fail as Samantha and Darrin's love overcomes every obstacle . Even though Endora casts countless farcical spells on Darrin, she never attempts to destroy him outright . During the first season, Endora threatens her warlock husband Maurice, after he destroys Darrin, saying that she will not have a human being on her conscience . It was one of the few times when Endora went out of her way to protect Darrin from Maurice (See episode 1 - 10). Endora, once, let Maurice kiss her . But, when she realizes that, after he has kissed her and disappeared, that she has contracted an illness which leaves her unable to use her powers, she is furious . until Maurice returns to gives her an antidote, and take her to, "the place we used to go to on the Milky Way", to have dinner . She doesn't get along with Darrin's mother, Phyllis Stephens, because she gets along too well with Phyllis' husband, Frank . But, they are civil to one another in, what Samantha calls, "killing one another with kindness". Endora does dote on her grandchildren, Tabitha and Adam; They call her "Grandmama". </P> <P> Larry Tate (David White) is Darrin's profit - obsessed boss and friend . Tate is a regular character . Tate's opinions turn on a dime to appease a client in an attempt to land a deal . However, there are two episodes that show evidence that Larry has deep feelings as well as having a sense of integrity . In the first season installment, "And Something Makes Three", Larry realizes he is to become a father for the first time and is almost overcome with joyful emotion . In the seventh season Christmas episode "Sisters at Heart", notwithstanding his obsession with the bottom line, Larry threatens to cancel an important client's account with McMann & Tate when he realizes the client is a racist . </P> <P> Louise Tate (Irene Vernon, and, after Vernon's departure from the show, Kasey Rogers) is Larry's wife and Samantha's closest mortal friend . Louise Tate was played by Irene Vernon during the first two seasons and then replaced by Kasey Rogers, who wore a short black wig to appear similar to Vernon . According to Rogers, </P> <P> Bill Asher noticed her tugging at the wig and asked why she was wearing it . She laughed and said, "because you told me to ." He replied, "Why don't you take it off!" and she played Louise with red hair for the show's final three seasons . </P>

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