surrogate:

one who serves as a substitute

surrogate:

one who serves as a substitute

(Noun)

Example Sentences:

Ramayana: On hearing that Vishwamitra was at the outskirts of his kingdom, Dasharatha didn’t even consider sending a surrogate to greet the powerful sage; he immediately sprang up from his throne and ran out. 

Mahabharata: Kings normally send their surrogates as peace messengers; that the Pandavas sent Krishna, the Supreme Lord, as their peace messenger showed how earnestly they sought peace.

Bhagavad-gita: Whenever we get distracted, our mind becomes our sneaky surrogate who does things different from, or even opposite to, what we intended to do.