Chantho

Chantho was a female Malmooth, and the last of her kind. She left her dead city and worked with Professor Yana of the Utopia Project. When Yana discovered that he was in fact the Master in Human form, he fatally wounded Chantho with a live electric cable. (DW: Utopia)

Her final action was to shoot the Master, triggering his regeneration.

To be polite Chantho like all Malmooth had to say the start of her name at the beggining of each sentance and the end of it at the end of the sentance so Chantho had to say Chan then sentance tho.

With Chantho's death the Malmooth became extinct.