The role of Cacambo in Voltaire's Candide

Although the main arc of Candide serves to slowly break down Pangloss's optimistic philosophies for the deluded Candide, I believe that Voltaire chose to include the character of Cacambo as a physical extension of Pangloss's thoughts on one's current situation being "the best of all possible worlds." Unlike other characters, who lose loved ones or become victims to violent incidents such as mutilation or murder, Cacambo is the faithful character that, aside from not dying along the way, never turns his back on Candide even when given the chance. Although Candide undergoes many hardships which eventually prove false Pangloss's ideas on the world, Cacambo constantly remains by Candide's side, acting as a guide in Pangloss's absence, loyally helping Candide to his utmost extent to improve their situations and acting as a smidgen of hope in the hellish situations that Candide is put through. Pangloss's belief that "all is for the best" is reborn in Cacambo's character amidst the constant pillaging, rape and war that Candide comes across, through Cacambo's undying devotion to his master and his wisdom on getting them out of tricky situations that sheds light into the brutal and dark world that the two are plunged into. Yet, just as Pangloss eventually met his own fall and his ideas were proved incorrect in the real world, did Cacambo eventually fall prey to the world as well, ending up a slave under a cruel master rather than a generous and willing sidekick to our hero.