Malla is the wife of Chewbacca.  She has an oversensitive look to her face that characterizes even more the stupidity of this show and other shows similar to the Holiday Special made in the 70s.  During the special, she watches a cooking program with Harvey Corman, and contacts Leia, Luke, and C-3PO, because she is worried about Chewie.  Of the Wookiees, this is the character you will remember least.  There is nothing special to her, although she is a bit on the heavy side, and she is plain dull.  The funny thing about her, as Peter Mayhew told me, is that she was played by a man.