Mrs A* Disguised As A Pearson's Puppeteer

Pearson's Puppeteers looked more alien that this, having two necks and heads, each equipped with a eye and a mouth with lips that doubled as hands with fingers as well as three legs. They were vegetarian and intensely pacifistic. Their Leader was called 'The Hindmost' because the Puppeteer response to battle was to run away and the bravest, or 'leader' was always the one closest to the enemy during the retreat! He appears in Larry Niven's Ringworld series . This is a bilaterally symmetrical cross eye viewable stereoscopic pair, by the way.